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Everything you need for a better insulated home
62 products across 6 categories, for attic, wall, crawl space and garage work. Each one is here because a job goes wrong or gets unpleasant without it — how much you need comes from your own measurements, which is what the calculator is for.
- Real productsShop at retailers you already use
- Project specificChosen for the job, not for commission
- No invented pricesWe have no retailer feed, so we show none
- Build your listQuantities come from your own measurements
Affiliate links — we may earn a commission if you purchase through these links, at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. Products are chosen on whether they suit the job, never on commission. Full disclosure.
Shop by what it is for
Six categories, each with our own reason for every product in it. Start wherever the job is: the material itself, the sealing that has to happen first, or the gear that makes the day survivable.
8 itemsInsulation
The material itself, compared honestly
The material itself. How much you need comes from your own measurements — coverage and pack sizes vary by brand, so the calculator gives you a bag or batt count rather than a guess.
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10 itemsSafety gear
Protection you will actually keep on
Fibreglass and attic dust are a genuine respiratory hazard. A respirator, sealed goggles and gloves belong on every project, whatever you are insulating.
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23 itemsMeasuring tools
Measure it properly, then cut once
Getting the area and the existing depth right is what decides whether the rest of the estimate means anything. Tape, laser, depth markers, moisture meter.
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12 itemsAir sealing
Seal the leaks before you insulate
Do this before the insulation goes down. Afterwards the gaps are unreachable, and insulation over an unsealed ceiling underperforms badly.
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9 itemsAttic accessories
The parts people forget and drive back for
The small items that get forgotten and cost a second trip: baffles, depth markers, hatch weatherstrip, walk boards, support rods.
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3 itemsRechargeable headlamps
You cannot work in an attic holding a phone
Hands-free lighting. Holding a phone torch is the usual reason a first attic trip ends early.
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Get quantities sized to your project
Use your dimensions and climate zone to turn this catalogue into an exact shopping list — bag counts, can counts, baffle counts.
No personal information required
Useful on almost every job
Whatever you are insulating, these come up. Everything else depends on the assembly and the material you choose.
- Essential
N95 disposable mask
The minimum for loose fibers and settled attic dust, and the one item never to skip. A surgical or cloth mask filters neither. Disposable, so buy a box rather than one.
- Essential
Fire-rated expanding foam
Seals gaps around flues, wiring and plumbing penetrations. Fire-rated specifically, because the gaps that leak most are the ones next to heat.
- Essential
Acoustical or latex sealant
Seals top plates and the smaller gaps expanding foam is too coarse for.
- Essential
Tape measure
For the area figure this calculator runs on, and for cutting batts to the cavity.
- Recommended
Rechargeable headlamp
Keeps both hands free while measuring or placing insulation, which matters when you are balancing on joists in the dark.
- Essential
Sealed safety goggles
Sealed rather than open-sided, because you will be working below the material and looking up into it.
- Essential
Work gloves
Fiberglass irritates skin on contact and the fibers are hard to wash out afterwards.
- Essential
Rafter vent baffles
Keeps the soffit vents clear once insulation is deep enough to block them. Blocked vents cause moisture and ice dams.
- Essential
Insulation depth markers
Set to your target depth before you start. Blown insulation looks even when it is not, and this is the only way to know you have hit the R-value you paid for.
- Recommended
Professional foam applicator gun
Controls the bead far better than a straw can, and lets you stop and restart a can over several days instead of wasting it.
Retailer buttons open a search at that store — exact products and pack sizes vary by location.
Why there are no prices here
We have no approved retailer product feed, so any figure on this page would be invented and out of date the week after. Retail prices move constantly and vary by store, which is exactly why the buttons send you to the retailer to check the current one — and why you will never see a rating, a review count or a stock claim here either.