Insulation Contractor · Milton
Insulation & air sealing in Milton
Attic top-ups, removals, spray foam and rim joists. Thermline Insulation will air seal the ceiling before adding depth, and photograph what was behind the hatch.
Serving Milton
- Air seal before insulating
- Attic removal & top-up
- Spray foam & batts
- LicensedLicence 7A-37639
- Response timeSame day where we can
- Serving Milton since 2010
About us
About Thermline Insulation
16Years of experience
Thermline Insulation started doing attics and quickly learned that most of the complaint — cold rooms, ice dams, frost on the sheathing — comes from air leaks rather than missing insulation. So we seal first and insulate second, we vacuum out what has been contaminated instead of burying it, and we leave you before and after photos with a depth marker in the frame. Rebate paperwork gets filled in properly, in the order the programs require.
What we do
Insulation services in Milton
Attic top-ups, removals, spray foam and rim joists. Thermline Insulation will air seal the ceiling before adding depth, and photograph what was behind the hatch.
Attic top-ups & full removal
Blown cellulose or fibreglass brought up to current levels, or the old contaminated insulation vacuumed out first when there has been vermin or a roof leak.
Air sealing before insulating
Top plates, pot lights, plumbing stacks and the attic hatch sealed first, because insulation over an air leak slows heat loss and stops none of it.
Spray foam
Closed and open cell foam for rim joists, cathedral ceilings, crawl spaces and additions where there is no room for the depth batts would need.
Basement & crawl space insulation
Foundation walls and crawl spaces insulated in an assembly that dries in the right direction, instead of trapping moisture behind poly and framing.
Batt insulation & vapour barrier
Walls, ceilings and sound batts installed cut-to-fit rather than compressed, with the vapour barrier detailed and taped at every penetration.
Soffit venting & baffles
Blocked soffits opened and baffles installed so the attic actually breathes — the missing step behind most ice damming and attic frost.
Mechanical & pipe insulation
Hot and chilled lines, ducts and boiler pipework jacketed to stop heat loss and condensation dripping into ceilings below.
Sound insulation
Party walls, bedrooms, basement suites and home offices treated with the right density and detailing so the quiet is real, not theoretical.
Looking for help in Milton?
Same day where we can response on new enquiries.
Credentials
Licences & certifications
The paperwork behind the work at Thermline Insulation.
- Red Seal Insulator (Heat and Frost)Certificate of Qualification in insulating, with Interprovincial Red Seal endorsement.
- CUFCA-certified spray foam installerInstaller certification through the Canadian Urethane Foam Contractors Association, with quality assurance paperwork on completion.
- Materials with a CCMC evaluationFoam and insulation products evaluated by the Canadian Construction Materials Centre and installed to their listing.
- Rebate documentation providedBefore and after photos, depth markers and invoices in the format home efficiency programs ask for.
- Respirator and containment protocolAttic vacuum-outs done under containment, and the house left unoccupied for the manufacturer's re-entry time after foam.
- WSIB coverage & $2M liabilityCertificates supplied before we open the hatch.
Questions
Frequently asked
If your question isn't here, call us — we would rather explain it than have you guess.
Far more than most houses built before the nineties have. We measure what is there with a depth gauge, photograph it, and tell you the current level and the recommended one for our climate zone. Depth alone is not the whole story though — insulation that is matted, wet or pushed aside is not performing at the number printed on the bag.
Because most attic heat loss is air moving through gaps, not heat conducting through material. Warm moist air escaping around a bathroom fan, a pot light or a plumbing stack carries far more energy than the same area of under-insulated ceiling, and it is what frosts an attic and drives ice damming. Blowing insulation over an unsealed ceiling buries the problem and leaves you disappointed with the bill.
Foam earns its cost where you need air seal and insulation in one step and have no depth to work with — rim joists, cathedral ceilings, crawl spaces, van and addition roofs. Open attics and stud walls are usually better served by air sealing plus blown-in or batts at a fraction of the price. Anyone who recommends foam everywhere is selling foam, not advice.
For the working day and the manufacturer's re-entry period afterward, yes — typically a full day, with ventilation running. We contain and ventilate the area regardless. Once it has cured, the foam is inert. Batt and blown-in work needs no re-entry period at all.
Usually, when it is done with air sealing and venting together. Ice dams form because heat escaping into the attic melts snow that refreezes at the cold eave. The fix is stopping the heat and air leaks, then making sure the soffits are clear and baffled so the attic runs cold. Heat cables treat the symptom and add to your hydro bill forever.
Frequently, through utility and government home efficiency programs, and the rules change from year to year. Most require an energy assessment before the work and another after, in that order — doing the work first usually disqualifies it. We will tell you what is running when you call and document the job the way the program requires.
Service area
Where we work
Thermline Insulation covers these communities.
- Milton
Office hours
- Monday
- 7 am – 5 pm
- Tuesday
- 7 am – 5 pm
- Wednesday
- 7 am – 5 pm
- Thursday
- 7 am – 5 pm
- Friday
- 7 am – 5 pm
- SaturdayToday
- 8 am – 1 pm
- Sunday
- Closed
Book online
Pick a time that suits you
Choose a slot and we will confirm it. No account, no waiting on hold.
Book a visit
Pick a time that works. Takes about 30 seconds.
Contact
Request a quote
Tell us what you need and we will get back to you with a straight answer.
- Phone
- (905) 555-0169Same day where we can response
- Address
- Milton
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