British Columbia · Energy · checked September 28, 2026

Attic insulation inspections in Surrey

The attic is usually the cheapest big energy fix in a house, and the inspection decides how to do it: how much insulation is there, where air leaks through the ceiling, and whether anything up there must not be disturbed.

Loose-fill insulation between attic joists, a yellow ruler showing its depth and frost on the roofing nails above

Cost

Included in an evaluation

Houses built before 1991

39%

Older houses usually leak more and have less insulation

Heating degree-days

2,851

Mild winters by Canadian standards

Common finding

R-10–20 vs R-50–60 target

Higher R-value means more insulation

How Surrey is built

Surrey's houses by when they were built Ten house shapes, one for each tenth of Surrey's 139,390 houses. Before 1961: 5%, 1961–1990: 34%, 1991–2000: 18%, 2001 or later: 43%. Older houses glow hotter.
  • Before 1961 5%
  • 1961–1990 34%
  • 1991–2000 18%
  • 2001 or later 43%
Each house stands for one in ten of Surrey's 139,390 houses (single-detached, semi-detached, row and duplex), drawn by when it was built. The glow shows the usual pattern: older houses tend to be leakier and less insulated. Rain marks the mild, wet winters: here moisture, not deep cold, is the main winter risk. Sources: Statistics Canada 2021 Census (table 98-10-0233-01), NRCan HOT2000 climate data.

What inspections find in Surrey attics

Of Surrey's 139,390 houses (single-detached, semi-detached, row houses and duplexes), 5% were built before 1961 and 39% before 1991, according to the 2021 Census. Attics in older houses commonly have a fraction of today's recommended insulation, and top-ups done over the years often buried air leaks instead of sealing them first.

Surrey gets about 2,851 heating degree-days a year, a measure of how much heating its climate needs, and its winter design temperature, the cold day heating systems are sized for, is −6.3°C. Those figures come from the climate data for Pitt Meadows, the closest comparable location in that data set (13 km away) in HOT2000, the home-energy software Natural Resources Canada (NRCan) gives energy advisors. That's the 10th-lowest heating demand of the 70 cities we cover. With winters this mild, extra attic insulation pays back more slowly on heating alone; keeping upstairs rooms cooler in summer and stopping damp air reaching the roof deck count too.

Vermiculite. Loose, pebbly, grey-brown or silver-gold insulation may contain asbestos. Health Canada's advice is not to disturb it; have it sampled before any attic work. Asbestos and vermiculite testing in Surrey

The right order for the work

  • Seal the air leaks first: top plates, pot lights, plumbing stacks, the hatch.
  • Fix ventilation baffles so new insulation doesn't block soffit vents.
  • Then top up the insulation. Burying unsealed leaks under new insulation wastes much of the benefit.

What an attic inspection checks.

Coastal BC Lower Mainland and Vancouver Island

What this means in Surrey’s climate

Mild, wet winters and summer heat waves: fix moisture first, then cooling and heat pumps.

Why it matters here: Checks insulation depth and looks for damp or stained roof sheathing, a sign of roof leaks or warm, moist air escaping into the attic.

Best timing: During or just after the October-to-March rainy season, when wetting is at its peak.

  • Fix moisture before tightening up. Heavy winter rain soaks walls and roofs here. Insulation makes outer layers colder and slower to dry, so fix leaks, condensation and mould first, or upgrades can trap water. Ask: Ask the registered energy advisor to note stains, damp spots and roof or window leaks, and to check that bath and kitchen fans vent outdoors.
  • Seal air leaks, then top up the attic. NRCan calls air sealing the most important retrofit. Pair it with attic insulation: today's new-home minimum here is about R-39, a useful target for older attics. Ask: Ask for a blower door test before and after sealing, so you can see the drop in ACH50.

What else homes in Surrey need →

Sources for this climate guide · checked October 26, 2026

NRCan-licensed service organizations serving Surrey

A service organization is a company that Natural Resources Canada (NRCan) licenses to deliver EnerGuide evaluations; its registered energy advisors do the home visit. Every EnerGuide evaluation includes an attic inspection: insulation depth, air leaks and red flags such as vermiculite or knob-and-tube wiring.

Source: NRCan list of licensed service organizations, checked September 28, 2026. Call to confirm your street is covered and ask about wait times.

Insulation programs in Surrey

Attic insulation inspection in Surrey: common questions

How much attic insulation should a Surrey house have?

Advisors commonly target around R-50 to R-60 in attics. Your EnerGuide report gives the recommendation for your house.

Can I top up the insulation myself?

Only after the air leaks are sealed and you've confirmed there is no vermiculite. The inspection tells you both.

Does attic insulation help in summer?

Yes. Sealing and insulating the attic floor slows the heat that builds up under the roof from reaching the rooms below, so upstairs bedrooms stay cooler. Keep the soffit vents clear with baffles so the attic can still dry out in damp months.

Attic insulation inspection near Surrey

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