Job takeoff
External wall insulation (EWI, EIFS) takeoff
Insulate a house from the outside (EWI in the UK, ETICS in Europe, EIFS in North America): scaffold and protection, the walls prepared and their fixtures taken off, insulation boards bonded and anchored from a starter track, a basecoat with glass-fibre mesh, a thin render finish, movement joints, the frames sealed and the fixtures refixed, with the fire classification and the fixings' wind design flagged and never certified.
A takeoff is the trade word for the shopping list a job produces — every material, and how much of each, worked out by its own cited calculator.
- 11Measurements in
- 12Trades out
Choose the build-up
Each layer changes the materials below; the dimensions stay the same.
Calculators behind the other choices:
Calculators behind the other choices:
Compare one layer at these dimensions, with the rest of the build-up held as you have it:
Give the job once
Every figure on the right follows these, in the units you choose.
Been given a quote for this job?
Paste it into the external wall insulation quote check: each line is read against these same calculators — what it leaves out, what it adds, and what to ask.
Check the quoteEvery trade, from those dimensions
then change a dimension, and each line shows what moved.
| Trade | Quantity | |
|---|---|---|
Protection: ground sheets and tape round each frameMasking and Protection Materials CalculatorSheets along the foot of every insulated wall, a strip about 1 m (3 ft) wide over the paths and planting where render and adhesive drop, and tape round all four sides of each window and door to hold the film over the glass. The film itself is bought by the roll to the windows' area.
Why this quantity?
Resting on
Change any other figure on the Masking and Protection Materials Calculator | 5 items | |
Scaffold round the insulated wallsScaffold Face Area and Hire Quantity CalculatorOne face along every insulated wall, their lengths end to end, to the height insulated: the platform the walls are prepared, boarded, meshed and rendered from, standing clear of the new face by the insulation's thickness and the room to work. The corners add a little to the run.
Why this quantity?
Resting on
Change any other figure on the Scaffold Face Area and Hire Quantity Calculator | 1914 ft² of face | |
Scaffold lifts at the gables, above the eavesScaffold Face Area and Hire Quantity CalculatorThe face above the eaves on each insulated end wall, its length by the gable's rise, to reach the apex. Shown only where there is a gable to insulate.
Why this quantity?
Resting on
Change any other figure on the Scaffold Face Area and Hire Quantity Calculator | 400 ft² of face | |
Adhesive bonding the boards to the wallEIFS Foam Board Adhesive Coverage CalculatorAdhesive for the boards on the net face and the thinner boards in the reveals, at the page's opening spread rate. It is the mass of the product the rate is quoted for: a two-part adhesive mixed with cement on site needs the cement as well, and the corners and edges of a wall may take a denser pattern than the middle.
Why this quantity?
Resting on
Change any other figure on the EIFS Foam Board Adhesive Coverage Calculator | 1253.37 lb | |
Anchors (mechanical fixings) through the boardsContinuous Insulation Fastener Count CalculatorAnchors for every board on the net face at the page's opening figure per board, drilled through once the adhesive has set. The board count in its working is the face divided by one 2 × 4 ft (610 × 1219 mm) board, whole boards; a cut board at a corner or an opening takes the full pattern, so the anchors run over this. The pattern and the anchors' length are the system holder's, for the wind on each part of the wall.
Why this quantity?
Resting on
Change any other figure on the Continuous Insulation Fastener Count Calculator | 1225 fasteners | |
Reinforcing mesh (glass fibre), in rollsEIFS Reinforcing Mesh Roll Count CalculatorStandard mesh over the face and the reveals, lapped at every joint by the page's overlap allowance, in the roll the sizes set: 50 m² (538 sq ft) in metric, the page's 500 sq ft (46.5 m²) in imperial. It runs on through the impact band as well. The diagonal patches at each opening's corners and the mesh on the corner beads come in widths of their own and are not in this count, as the page says.
Why this quantity?
Resting on
The lap allowance: the calculator's working figure, a trade convention. Change any other figure on the EIFS Reinforcing Mesh Roll Count Calculator | 5 rolls | |
Impact mesh at ground levelEIFS Impact-Resistant Mesh Reinforcement Zone CalculatorThe heavier mesh bedded first along the foot of every insulated wall to the height given, butted rather than lapped, with the standard mesh over it in the next pass. The doors and windows inside the band are not taken off, and the reveals and corners in it add a little back.
Why this quantity?
Resting on
Change any other figure on the EIFS Impact-Resistant Mesh Reinforcement Zone Calculator | 754 ft² | |
Movement joints in the front wallStucco/EIFS Expansion Joint Layout CalculatorJoints along the front wall at the page's opening maximum unbroken run, which stands in for the system holder's figure: each is a movement bead full height, bedded in the basecoat. The corners end each wall's run. A system may ask for joints only where the wall itself has one, or where the wall behind changes, rather than at a spacing; set it from the specification.
Why this quantity?
Resting on
Change any other figure on the Stucco/EIFS Expansion Joint Layout Calculator | 1 expansion joint | |
Movement joints in the back wallStucco/EIFS Expansion Joint Layout CalculatorThe same along the back wall, a run of its own. An end wall shorter than the maximum takes none; a longer one is set out on the joint page.
Why this quantity?
Resting on
Change any other figure on the Stucco/EIFS Expansion Joint Layout Calculator | 1 expansion joint | |
Render finish coat (silicone, acrylic or synthetic stucco)EIFS Finish and Primer Pail Count CalculatorThin-coat render over the net face with the reveals added, and the page's waste allowance, in the pack the sizes set: a 25 kg (55 lb) tub of a 1.5 mm (1/16 in) grain in metric at its maker's coverage, a 5 US gal (18.9 L) pail at the page's opening coverage in imperial. The working gives the primer that goes on first.
Why this quantity?
Resting on
The waste allowance: the calculator's working figure, a trade convention. Change any other figure on the EIFS Finish and Primer Pail Count Calculator | 18 pails | |
Mastic (caulk) round the framesCaulk & Sealant CalculatorA bead of exterior mastic where the render meets each window and door frame, all four sides, on the tube page: the openings at their average size, with the page's waste allowance, in tubes of 10.1 US fl oz (299 ml) at its 1/4 in (6 mm) bead. A British 310 ml (10.5 US fl oz) cartridge goes a little further. The ends of each sill extension and any refixed fitting take a little more.
Why this quantity?
Resting on
The waste allowance: the calculator's working figure, a trade convention. | 8 tubes | |
Skip (dumpster) for offcuts and packagingSkip & Dumpster Size CalculatorSized on an allowance, not a measurement: loose offcuts, wrapping and empty tubs taken as 15% of the boards' own volume. Render hacked off the old wall adds rubble on top of it, and the page does not know how much of the wall is hollow until it is tapped.
Why this quantity?
Resting on
Change any other figure on the Skip & Dumpster Size Calculator | 3.62 yd³ | |
Protection: ground sheets and tape round each frameMasking and Protection Materials CalculatorSheets along the foot of every insulated wall, a strip about 1 m (3 ft) wide over the paths and planting where render and adhesive drop, and tape round all four sides of each window and door to hold the film over the glass. The film itself is bought by the roll to the windows' area.
Why this quantity? | 5 items | |
Scaffold round the insulated wallsScaffold Face Area and Hire Quantity CalculatorOne face along every insulated wall, their lengths end to end, to the height insulated: the platform the walls are prepared, boarded, meshed and rendered from, standing clear of the new face by the insulation's thickness and the room to work. The corners add a little to the run.
Why this quantity? | 175 m² of face | |
Scaffold lifts at the gables, above the eavesScaffold Face Area and Hire Quantity CalculatorThe face above the eaves on each insulated end wall, its length by the gable's rise, to reach the apex. Shown only where there is a gable to insulate.
Why this quantity? | 37.5 m² of face | |
Adhesive bonding the boards to the wallEIFS Foam Board Adhesive Coverage CalculatorAdhesive for the boards on the net face and the thinner boards in the reveals, at the page's opening spread rate. It is the mass of the product the rate is quoted for: a two-part adhesive mixed with cement on site needs the cement as well, and the corners and edges of a wall may take a denser pattern than the middle.
Why this quantity? | 560.55 kg | |
Anchors (mechanical fixings) through the boardsContinuous Insulation Fastener Count CalculatorAnchors for every board on the net face at the page's opening figure per board, drilled through once the adhesive has set. The board count in its working is the face divided by one 1200 × 600 mm (about 4 × 2 ft) board, whole boards; a cut board at a corner or an opening takes the full pattern, so the anchors run over this. The pattern and the anchors' length are the system holder's, for the wind on each part of the wall.
Why this quantity? | 1250 fasteners | |
Reinforcing mesh (glass fibre), in rollsEIFS Reinforcing Mesh Roll Count CalculatorStandard mesh over the face and the reveals, lapped at every joint by the page's overlap allowance, in the roll the sizes set: 50 m² (538 sq ft) in metric, the page's 500 sq ft (46.5 m²) in imperial. It runs on through the impact band as well. The diagonal patches at each opening's corners and the mesh on the corner beads come in widths of their own and are not in this count, as the page says.
Why this quantity? | 5 rolls | |
Impact mesh at ground levelEIFS Impact-Resistant Mesh Reinforcement Zone CalculatorThe heavier mesh bedded first along the foot of every insulated wall to the height given, butted rather than lapped, with the standard mesh over it in the next pass. The doors and windows inside the band are not taken off, and the reveals and corners in it add a little back.
Why this quantity? | 70 m² | |
Movement joints in the front wallStucco/EIFS Expansion Joint Layout CalculatorJoints along the front wall at the page's opening maximum unbroken run, which stands in for the system holder's figure: each is a movement bead full height, bedded in the basecoat. The corners end each wall's run. A system may ask for joints only where the wall itself has one, or where the wall behind changes, rather than at a spacing; set it from the specification.
Why this quantity? | 1 expansion joint | |
Movement joints in the back wallStucco/EIFS Expansion Joint Layout CalculatorThe same along the back wall, a run of its own. An end wall shorter than the maximum takes none; a longer one is set out on the joint page.
Why this quantity? | 1 expansion joint | |
Render finish coat (silicone, acrylic or synthetic stucco)EIFS Finish and Primer Pail Count CalculatorThin-coat render over the net face with the reveals added, and the page's waste allowance, in the pack the sizes set: a 25 kg (55 lb) tub of a 1.5 mm (1/16 in) grain in metric at its maker's coverage, a 5 US gal (18.9 L) pail at the page's opening coverage in imperial. The working gives the primer that goes on first.
Why this quantity? | 21 pails | |
Mastic (caulk) round the framesCaulk & Sealant CalculatorA bead of exterior mastic where the render meets each window and door frame, all four sides, on the tube page: the openings at their average size, with the page's waste allowance, in tubes of 10.1 US fl oz (299 ml) at its 1/4 in (6 mm) bead. A British 310 ml (10.5 US fl oz) cartridge goes a little further. The ends of each sill extension and any refixed fitting take a little more.
Why this quantity? | 7 tubes | |
Skip (dumpster) for offcuts and packagingSkip & Dumpster Size CalculatorSized on an allowance, not a measurement: loose offcuts, wrapping and empty tubs taken as 15% of the boards' own volume. Render hacked off the old wall adds rubble on top of it, and the page does not know how much of the wall is hollow until it is tapped.
Why this quantity? | 2.69 m³ |
Estimates, not a quote. Each row gives its base, the allowance on top, the adjusted figure and what to order; change an allowance on the row, or open its reasoning to see every figure it rests on. A trade's own page carries what it does not cover — open the one you are about to order against.
Labour and programme
Person-hours for the rows going in, from trade rules of thumb: a range for each piece of work, never a price.
- Protection: ground sheets and tape round each frame1.4 h (0.7–2.8)
- Adhesive bonding the boards to the wall133 h (76–341)
- Reinforcing mesh (glass fibre), in rolls76 h (47–152)
- Render finish coat (silicone, acrylic or synthetic stucco)47 h (28–114)
- Mastic (caulk) round the frames5.9 h (2.9–12)
- Skip (dumpster) for offcuts and packaging2.8 h (1.4–8.3)
About 266 person-hours in the rows that carry them, between 157 and 630.
Trade by trade
- Labourer1 labourerhalf a day
- Plasterer1 plasterer + 1 labourer16 days
- Glazier1 glazierhalf a day
About 17 days, one trade after another at eight hours a day. Left out: drying and curing, deliveries, inspections, trades overlapping.
6 rows carry no hours of their own
- Scaffold round the insulated walls: Scaffolding is not rated here: it is usually erected by a scaffolding firm and priced as hire, and where your own crew puts it up, the system and the height set the time.
- Scaffold lifts at the gables, above the eaves: Scaffolding is not rated here: it is usually erected by a scaffolding firm and priced as hire, and where your own crew puts it up, the system and the height set the time.
- Anchors (mechanical fixings) through the boards: counted with Adhesive bonding the boards to the wall
- Impact mesh at ground level: counted with Reinforcing mesh (glass fibre), in rolls
- Movement joints in the front wall: counted with Reinforcing mesh (glass fibre), in rolls
- Movement joints in the back wall: counted with Reinforcing mesh (glass fibre), in rolls
Labour and programme
Person-hours for the rows going in, from trade rules of thumb: a range for each piece of work, never a price.
- Protection: ground sheets and tape round each frame1.4 h (0.7–2.8)
- Adhesive bonding the boards to the wall131 h (75–336)
- Reinforcing mesh (glass fibre), in rolls75 h (47–149)
- Render finish coat (silicone, acrylic or synthetic stucco)47 h (28–112)
- Mastic (caulk) round the frames5.8 h (2.9–12)
- Skip (dumpster) for offcuts and packaging2.7 h (1.3–8.1)
About 262 person-hours in the rows that carry them, between 154 and 621.
Trade by trade
- Labourer1 labourerhalf a day
- Plasterer1 plasterer + 1 labourer16 days
- Glazier1 glazierhalf a day
About 17 days, one trade after another at eight hours a day. Left out: drying and curing, deliveries, inspections, trades overlapping.
6 rows carry no hours of their own
- Scaffold round the insulated walls: Scaffolding is not rated here: it is usually erected by a scaffolding firm and priced as hire, and where your own crew puts it up, the system and the height set the time.
- Scaffold lifts at the gables, above the eaves: Scaffolding is not rated here: it is usually erected by a scaffolding firm and priced as hire, and where your own crew puts it up, the system and the height set the time.
- Anchors (mechanical fixings) through the boards: counted with Adhesive bonding the boards to the wall
- Impact mesh at ground level: counted with Reinforcing mesh (glass fibre), in rolls
- Movement joints in the front wall: counted with Reinforcing mesh (glass fibre), in rolls
- Movement joints in the back wall: counted with Reinforcing mesh (glass fibre), in rolls
Setups you have saved
The build-up, the dimensions and any allowance you changed — kept on this device, and reusable on any job. Your prices are not copied in: they stay in your price book, so a setup never holds a stale one.
How far does a budget go?
At your own prices, with this build-up unchanged.
About this job
External wall insulation gives a house a new, thicker outer skin: insulation boards bonded and anchored to the old wall, a basecoat (base coat, in North American terms) with glass-fibre mesh bedded in it, and a thin render over the top. It is one system under three names: EWI in Britain, ETICS (an external thermal insulation composite system) in Europe and EIFS (an exterior insulation and finish system) in North America. On the solid wall these rows measure nothing in it is ventilated; each layer is stuck to the one beneath, so the old wall must be sound enough to carry them, and the edges where the system stops decide whether it keeps water out: the foot of the wall, every window and door, the eaves and a neighbour's line.
The rows follow the layers as they go on. The boards cover the walls' net face: the front and back, each end wall insulated with its gable triangle above the eaves, less the windows and doors. Round each frame the reveal takes a strip of its own, lined with thinner board and rendered back to the frame, as deep as the frame's set-back plus the insulation. The adhesive, the mesh and the finish take the face and the reveals together; the anchors are counted per board on the face alone, where they drill through into the wall.
The units pick the packs. With metric showing, the finish opens on a British thin-coat render sold in 25 kg (55 lb) tubs, about 13.9 L (3.7 US gal) each at its maker's stated density, covering about 10 m² (108 sq ft) a tub at a 1.5 mm (1/16 in) grain, and the mesh on rolls of 50 m² (538 sq ft); with imperial showing, on the finish page's 5 US gal (18.9 L) pail and its 500 sq ft (46.5 m²) roll. The anchors are counted on a 1200 × 600 mm (about 4 × 2 ft) board with metric showing, and on the 2 × 4 ft (610 × 1219 mm) EPS board EIFS uses with imperial showing.
Thickening a wall moves everything fixed to it. Downpipes (downspouts), soil and waste pipes, lights, alarm boxes and satellite dishes come off and go back on longer brackets; air bricks, vents and overflow pipes are sleeved through the new layer so they still reach the open air; each window sill (cill) gets a longer pressed sill over it; and where the roof's overhang no longer clears the new face, the fascia and soffit come out with it. A boiler flue is extended by a registered gas engineer, listed as its own work. A gas or electricity meter box is moved only by the supplier or the network operator, and nothing on this page lists it.
Two questions stay open on purpose. Whether the system's fire classification suits the building, and where any mineral wool fire breaks go, are for the system holder and building control. Whether the old wall holds the adhesive and the anchors against the wind is the system holder's too, settled by pull-out tests where the wall's strength is unknown. The anchor row counts at its page's opening figure per board, and nothing on this page is a sign-off.
How each line reads
- Base
- What the calculator gives for these dimensions, before anything is added.
- Allowance
- Cutting waste, a lap or spare stock — named, with where it comes from, and changeable on the row.
- Adjusted
- The base with its allowance on top.
- Order
- What to buy: the adjusted figure in whole boards, bags, rolls or lengths.
The order this happens in
Quantities do not tell you the sequence, and on this job the sequence is where the money goes wrong.
- Survey the walls and settle the system with its holder's specification for the boards, adhesive, anchors and render; notify building control or take out the permit, and have any old render, soffit or panel that could contain asbestos checked first.
- Put the scaffold up standing clear of the new face, with room for the insulation's thickness between the wall and the working platform; sheet the paths and planting at the foot of the walls, and mask the windows and doors.
- Isolate the outside lights and take them off, then the downpipes, pipes, dishes and brackets; kill any moss or algae with a biocide and wash it off, tap the old render for hollows and hack off what has lost its key, fill, and stabilise a dusty face.
- Fix the starter (base) track level above the damp-proof course, extend the fascia and soffit where the overhang will not clear, and bond the boards from the track up, joints staggered and corners interlocked, with fire breaks set in line where the system asks and thinner board into the reveals.
- Once the adhesive has set, drill and set the anchors to the holder's pattern, sleeve the air bricks, vents and overflow pipes through the boards so each still reaches the open air, fit the sill extensions, and have the gas engineer extend any flue through the new layer before it is coated.
- Bed the corner, drip and stop beads and the movement joints, then trowel on the basecoat with the mesh lapped into it: the heavier impact mesh first at ground level, and a diagonal patch at each corner of every opening.
- When the basecoat has cured, prime it and lay the render finish (finish coat) one elevation at a time from corner to corner, kept out of rain and frost until it cures; then run mastic (caulk) round every frame and sill end.
- Refix the downpipes, lights and fixtures on longer brackets through the finished face, look over every edge before the scaffold comes down, and hand over the system guarantee and the notification.
What this takeoff does not cover
- The system's fire classification, whether its boards and render may be used on this building at all, and where fire breaks (fire barriers) of mineral wool are set, as at a party wall line or at each floor. The fire breaks are listed as work where the system or building control asks for them; nothing here says where a line goes or which rating applies.
- How many anchors each board takes, how long they are and what they must hold in the wall behind, and the pull-out tests the system holder has done on a wall of unknown strength, with what those tests find. The anchor row counts at its page's opening figure per board.
- A row of its own for the insulation boards (EPS, mineral wool, PIR or wood fibre). Their number is in the anchor row's working: the net face divided by one board, whole boards before those cut at corners and openings. The boards are bought by the pack or by area from the system holder's range, at the thickness entered, which the page does not choose.
- A row for the basecoat itself, bought by the bag at its maker's rate over the same face and reveals the mesh row covers; in some systems it is the same bagged product as the adhesive.
- A row of its own for the primer under a silicone or acrylic render finish: it is worked out in the finish row's working at that page's primer coverage, bought by the tub or pail from the render's maker, and not compared as a line.
- A count of the beads: the corner (angle) beads, the drip bead over the starter track, and the stop beads at the verges, a neighbour's line and round the frames. Each is bedded in the basecoat as its work and bought by length to the house's own edges; the movement joints are the only beads counted.
- A gas or electricity meter, its meter box or the gas pipe to it: to relocate or move any of them is the supplier's, the network operator's or a registered gas engineer's work. The flue's own design and certification are the gas engineer's too.
- Planning permission, and consent in a conservation area or under an article 4 direction, where the new face changes how the house looks; in North America, a design review beyond the building permit.
- Extending the rafter feet or the gable ladder so the roof clears the thicker wall. Where the eaves are brought out, the fascia boards are a row, the soffit and bargeboards are listed as work, and the carpentry behind them is not sized.
- Repairs to a wall that is structurally cracked, bulging or damp, and whatever causes it: the page prepares the face of a sound wall and nothing deeper.
- A drained system on a timber- or steel-framed wall, the way EIFS over sheathing is built in North America: the water resistive barrier over the sheathing (house wrap, a WRB sheet or a coat applied as a liquid), the drainage mat or grooved boards that let water out behind the insulation, and the flashings at each opening beneath it. These rows measure a system bonded to a solid wall.
- Anything on a neighbour's side of the party wall line, and any agreement needed to stand a scaffold on their land.
- The windows and doors themselves. Replacing them first, so the new frames sit in line with the insulation, is its own job.
- Masonry paint over the finished render: a silicone or acrylic finish comes coloured through and is not painted here.
Quote check
Been given a quote for this job?
Paste it into the external wall insulation quote check. Every line of it is read against these same calculators and your measurements. Quantities only, never prices.
What it leaves out
Every line this takeoff has that nothing on the quote reads as.
What it adds
Labour, removal, hire, fees — each named for what it is.
What to ask
One list of questions, ready to copy. Never a verdict.
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Frequently asked questions
- What does the external wall insulation takeoff give for a typical job?
- Opened at Front wall length (the back wall the same) 10 m · End wall length, each 7.5 m · End walls insulated 2 · Height insulated, starter track to eaves 5 m · Gable height above the eaves, at the apex 2.5 m · Windows and doors in the insulated walls 10 · Opening width, average 1.1 m · Opening height, average 1.3 m · Frame set back from the old wall face 0.1 m · Insulation thickness 0.1 m · Impact mesh height at ground level 2 m, it orders: Protection: ground sheets and tape round each frame, 5 items; Scaffold round the insulated walls, 175 m² of face; Scaffold lifts at the gables, above the eaves, 37.5 m² of face; Adhesive bonding the boards to the wall, 561 kg; Anchors (mechanical fixings) through the boards, 1,250 fasteners; Reinforcing mesh (glass fibre), in rolls, 5 rolls; Impact mesh at ground level, 70 m²; Movement joints in the front wall, 1 expansion joint; Movement joints in the back wall, 1 expansion joint; Render finish coat (silicone, acrylic or synthetic stucco), 21 pails; Mastic (caulk) round the frames, 7 tubes; Skip (dumpster) for offcuts and packaging, 2.69 m³. Opened at Front wall length (the back wall the same) 33 ft · End wall length, each 25 ft · End walls insulated 2 · Height insulated, starter track to eaves 16.5 ft · Gable height above the eaves, at the apex 8 ft · Windows and doors in the insulated walls 10 · Opening width, average 3.5 ft · Opening height, average 4.5 ft · Frame set back from the old wall face 4 in · Insulation thickness 4 in · Impact mesh height at ground level 6.5 ft: Protection: ground sheets and tape round each frame, 5 items; Scaffold round the insulated walls, 1,914 ft² of face; Scaffold lifts at the gables, above the eaves, 400 ft² of face; Adhesive bonding the boards to the wall, 1,253 lb; Anchors (mechanical fixings) through the boards, 1,225 fasteners; Reinforcing mesh (glass fibre), in rolls, 5 rolls; Impact mesh at ground level, 754 ft²; Movement joints in the front wall, 1 expansion joint; Movement joints in the back wall, 1 expansion joint; Render finish coat (silicone, acrylic or synthetic stucco), 18 pails; Mastic (caulk) round the frames, 8 tubes; Skip (dumpster) for offcuts and packaging, 3.62 yd³. Every figure follows the dimensions you give it.
- Which calculators does the external wall insulation takeoff run?
- 10 calculators, for 12 lines: Masking and Protection Materials Calculator, Scaffold Face Area and Hire Quantity Calculator, EIFS Foam Board Adhesive Coverage Calculator, Continuous Insulation Fastener Count Calculator, EIFS Reinforcing Mesh Roll Count Calculator, EIFS Impact-Resistant Mesh Reinforcement Zone Calculator, Stucco/EIFS Expansion Joint Layout Calculator, EIFS Finish and Primer Pail Count Calculator, Caulk & Sealant Calculator, Skip & Dumpster Size Calculator. Each has a page of its own with its formula and its sources; the takeoff runs them all on one set of dimensions.
- What does the external wall insulation takeoff leave out?
- 14 things, each named on this page: The system's fire classification, whether its boards and render may be used on this building at all, and where fire breaks (fire barriers) of mineral wool are set, as at a party wall line or at each floor; How many anchors each board takes, how long they are and what they must hold in the wall behind, and the pull-out tests the system holder has done on a wall of unknown strength, with what those tests find; A row of its own for the insulation boards (EPS, mineral wool, PIR or wood fibre). Their number is in the anchor row's working; A row for the basecoat itself, bought by the bag at its maker's rate over the same face and reveals the mesh row covers; in some systems it is the same bagged product as the adhesive; A row of its own for the primer under a silicone or acrylic render finish; A count of the beads; A gas or electricity meter, its meter box or the gas pipe to it; Planning permission, and consent in a conservation area or under an article 4 direction, where the new face changes how the house looks; in North America, a design review beyond the building permit; Extending the rafter feet or the gable ladder so the roof clears the thicker wall; Repairs to a wall that is structurally cracked, bulging or damp, and whatever causes it; A drained system on a timber- or steel-framed wall, the way EIFS over sheathing is built in North America; Anything on a neighbour's side of the party wall line, and any agreement needed to stand a scaffold on their land; The windows and doors themselves; Masonry paint over the finished render.
- Can I check a quote for this job against the takeoff?
- Yes. The external wall insulation quote check reads a quote's lines against these same calculators and your measurements, and reports what it leaves out, what it adds and what to ask. It reads quantities, never prices.