Sunrise windows

mark101January 30, 2012

my installer uses foam for insulation but said alot of times he measures very well and only can use caulk due to the gap being too narrow ; foam will just fall right out. even using a narrow straw, the foam wrap that comes with the window will prevent the foam from staying in due to the narrow gap.

i think he said the window will come 1/4 inch less than the actual width, 36" will actually come 35 3/4. should we order 35 1/2 exact size so foam will fit?

Thank you for reporting this comment. Undo

I would follow your installers recommendations. If the new window fits tightly, caulk (window to wood) is sufficient when foam wont fit. Ideally, you want the window as tight as possible, while being able to square it up in an imperfect opening.

    Bookmark   January 30, 2012 at 9:31PM
Thank you for reporting this comment. Undo

ok.. so as long as its a tight fit no foam is used? he said under 1/4 inch is tough. he said the fill perimeter foam wrap plus a good caulk will be enough. if its a big gap, he will foam. he akways foams the sill, whatever that means.

    Bookmark   January 30, 2012 at 10:31PM
Thank you for reporting this comment. Undo
Windows on Washington Ltd

Sounds about dead on in my book.

The sill is foamed because there is a progressively larger gap under it as the wood sloped sill against the square vinyl bottom creates more of a gap.

    Bookmark   January 31, 2012 at 7:20AM
Thank you for reporting this comment. Undo

so ordering the window a bit smaller so he can foam will not make a difference?

    Bookmark   January 31, 2012 at 8:17AM
Thank you for reporting this comment. Undo

No window opening is perfectly square. When measuring a window we take the smallest measurement and then deduct 1/4 of an inch from it. That means that if the opening is out of square by 1/4 of an inch, that the window could be 1/2 inch off in certain places. This is why foam insulation is used. You are better off having the opening measured as tight as possible and then any gaps filled with foam rather than creating a large gap by intentionally ordering the windows too small with the intent of filling that gap with foam.

Think about it. Why would you want to order the windows too small just so foam insulation could be added?

    Bookmark   January 31, 2012 at 8:45AM
Thank you for reporting this comment. Undo

point well taken. i guess when installing window from inside, its impossible to foam around outside perimeter? my contractor said the exterior stops would prevent that.

    Bookmark   January 31, 2012 at 9:13AM
Thank you for reporting this comment. Undo

That is not possible. Most pros (at least in my area) remove the exterior stops for installation rather than the interior.
That said, it doesn't make much difference which side the foam is applied from, it will still seal that gap.

    Bookmark   January 31, 2012 at 7:21PM
Thank you for reporting this comment. Undo

if its an inside install, how would foam be applied around the exterior perimeter?
if it was an exterior install then the exterior stops would be removed and foam applied. how cannfoam be used, other than sill, if the stops are still in place due to an interior install?

    Bookmark   February 1, 2012 at 7:51AM
Thank you for reporting this comment. Undo
Windows on Washington Ltd

You don't foam the exterior if it is in an interior install.

Foam is installed from the inside at that point if required.

    Bookmark   February 1, 2012 at 8:25AM
Thank you for reporting this comment. Undo

thanks everyone

    Bookmark   February 1, 2012 at 9:28AM
Thank you for reporting this comment. Undo

What he ^ said. :D

    Bookmark   February 2, 2012 at 5:02PM
Sign Up to comment
More Discussions
Plantation Shutters Pros/Cons, need advice
Hi, I'm new to this website and owning a home so forgive...
Scherer Bros Windows Rotting
We have just learned our bottom window sashes are badly...
Dual pane window retrofit, for sound blocking, question on thickness.
Been looking at options on vinyl windows with better...
pulley and weight window stuck open
I cannot get it closed even though I basically hang...
Any opinions on Hurd H3?
I know Hurd is not well-regarded here on GW but the...
Sponsored Products
Hand Carved Wooden Bell
$39.99 | Dot & Bo
Villa Rizzardi Italian Fabric in Ebony
$35.00 | FabricSeen
Turquoise Grey Zig Zag 84-inch Curtain Panel Pair
Ellis Curtain Logan Check Lined Empress Valance - T 680-LINED EMPRESS VALANCE-BL
$44.99 | Hayneedle
3"Dia. Smooth Rings
$40.00 | Horchow
Yellow Jags Cornice Valance
$29.99 | zulily
Good Housekeeping Roman Shades: Exclusive Solids & Patterns Blackout
Safari Antique Brass Antique Brass Adjustable Window Rod, 48 Inch To 84 Inch
$22.95 | Bellacor
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™