Loftline Attic Co. · Attics, kneewalls & rooflines · Brackett Hill · Est. 2008
The room above your ceiling sets the bill below it.
Loftline does one part of the house properly: the attic. Air-sealed floors, dense-packed kneewalls, R-60 over the flat, hatches and drop-stairs that stop being chimneys, and baffles that keep the ventilation the roof needs — with a blower-door reading before and after, and infrared plates of every bypass we closed.
Services
The attic menu
01
The air-sealed attic floor
Top plates, wire and pipe chases, the chimney chase with its fire-rated clearance, and every recessed light that breathes ceiling into attic — sealed before a fibre is blown, because R-60 over an open floor is a hat without a head. The plates in your file show each bypass before and after.
02
Kneewalls, dense-packed
The forgotten walls of the half-storey: dense-packed cellulose to a gauged density, sealed on the attic side where the air actually moves. Rooms under kneewalls run five degrees cold all winter for exactly this reason, and the fix is a hose and a gauge, not a radiator.
03
R-60 flat & the ventilation baffle
Blown wool or cellulose to R-60 over the flat, dressed back from flues and fixtures to real clearances — and baffles set at every eave so the air the roof needs keeps moving under the deck. An attic can be warm and a roof can stay cold; ours are both, on purpose.
04
Hatches, drop stairs & the whole bypass
The hatch that lifts like a chimney flap, the drop-stair that folds down a column of warm air every time it opens, the whole-house fan shivering in its frame. Weatherstripped, dammed, capped — small parts, and on the median roofline-town house they are a tenth of the leakage the fan reads.
Why the specialism
One room, done completely
The attic is where a heating bill is written: the stack effect pulls warm air through every ceiling bypass and drags cold in at the sill to replace it. A crew that does everything treats the attic between the driveway and the basement; a crew that does attics treats it as the whole job — the floor, the kneewalls, the hatch, the baffles, and both door readings, in one scope and one visit block.
The attic number, named
Every Loftline contract names the CFM50 the closed attic will read at the re-test — and the re-test is the last hour of the last day, not a favour. Miss it and the crew returns on its own calendar until the gauge agrees.
How the work runs
The attic days, four of them
One block, booked as one block — the clearing sets the map the other three days work from, and the test-out closes it before the ladder leaves the yard.
Clear & photograph
Day one empties the attic and photographs every bay, chase and bypass — the before-plates, and the map the whole job works from.
Seal
Days one and two: foam and gasket down the map — top plates, chases, the chimney clearance, the lights that breathe.
Baffle & pack
Day three: eave baffles set, kneewalls dense-packed to the gauge, R-60 blown over the flat and dressed to clearances.
Test-out
Day four, the last hour: the fan back in the door reading the contract’s number — then the plates re-shot and the file closed.
2025 — 2026, the roofline towns
Attics we have closed
Six from last season’s files, photographed inside the four-day block — the empty-bay map, the dressed clearances and the test-out hour included, because those are the pages customers ask to see again.
Fair questions
Asked over every hatch
The five every ladder-leaning conversation in the roofline towns reaches — answered across the full page because each one deserves the width.
My attic already has insulation — why is the house still cold?
Because insulation is not air sealing, and most attic "insulation" is lying on an open floor. Heat rises and takes air with it: through top plates, chases, light fittings and the hatch itself, straight past the fibre and out the roof. The fan reads it in an hour — on the median roofline-town house, more than half the total leakage crosses the attic floor.
What R-value should the flat be, honestly?
R-60 blown, because over a sealed flat it is the cheapest performance on the building — the last inches cost least and save most. Under it, the kneewalls carry R-15 dense-packed and cathedral bays R-38 within their ventilation. The contract names each value per assembly, and the file photographs the gauge that proved the density.
Will a tight attic cook my shingles?
Not with baffles — and baffles are the part of the trade that gets skipped. Every eave gets its channel so the deck stays cold and dry from below; every flue and fixture gets its real clearance, dammed and dressed. A warm house and a cold roof are not opposites; they are the same job done in the right order.
How much does the hatch really matter?
On its own, a weatherstripped and dammed hatch is a small number — as a tenth of the whole attic floor’s leakage, it is not small at all. The drop-stair is worse: every opening folds a column of warm air up into the attic and lets it go. Sealed, dammed and capped, both stop being chimneys, and the plates in the file show the plume before and after.
Do you do the rest of the house too?
No — and we will tell you who should. Loftline does the attic completely and names the number it closed; if the plates say the walls or the sill want their own crew, the file says so and the referral is free. A specialism that grabs the whole house is just a contractor with a ladder.
Two firms quoted us "more insulation" over the eight inches already there. Loftline put the fan in the door, showed us the lit-up top plates on camera, and sealed the floor before blowing a thing — then packed the kneewalls the upstairs rooms had been leaning against for eighty years. The re-test read inside the contract’s number with the kettle on. The bedroom under the kneewall is our daughter’s now, instead of the coldest room in Nine Ashes.
The shop, in figures
Seventeen seasons over the ceiling
Free door-and-plates survey across the roofline towns · (555) 029-3381 · attic@loftline.example
Get the attic read before winter
Send the address and the era of the house. The survey is free, the plates and both door readings go in a file with your name on it, and the four-day block that follows is priced off what the fan actually measured. attic@loftline.example