Gap Between Window Frame and Brickwork

ChewyLuey · 12-01-2016 2:07pm #1

Hi All

Please see the attached picture.
Its a ~20 year old semi-detatched house. There is quite a gap beween top of the PVC window frame and the brickwork.
Could this be a source of draughts despite the corresponding inside wall on the interior of the frame seeming reasonably well sealed and no noticable air flow in the room directly inside ?
Should I seal it up with expanding foam ?

Thanks

stipower · 12-01-2016 6:27pm

for myself id be worried about heavy driven rain blowing in through that gap and ending up maybe inside the cavity,possibly causing an area of dampness,no harm in getting it sealed up and be done with it.

jonon9 · 12-01-2016 7:31pm

It's a common thing to see on houses built in the last 20 years. If your handy it can be done in no time. Can of spray foam some mortar and once dry an exterior grade silicone seal should do it.

sky6 · 12-01-2016 10:24pm

It happens from time to time where the Window doesn't quite fit the ope. i repaired two similar Windows only a while ago. Fill the gap first with spray foam. Don't worry if it comes out over the surface. Let it dry fully, Then using a Sharp Knief or Blade cut it back flush with the surface. Then clean the surface of the frame and get a length of 25, or 50 mm flat pvc, cut to length and using clear Silicon stick it into place
You will also need Duck Tape to hold it in place while it sets. after a day or so remove the duck tape and put a bead of Silicone across the top. Sealing it to the underside of the Steel Head. Job done. You will need someone to help you as you cant be holding it up and handing up tools etc. If you can get the PVc to go up behind the Head all the better.

ChewyLuey · 12-01-2016 10:54pm

Thanks. Is the pvc for aesthetic or insulation purpose here ? Ie could I just bring it flush to surface with foam and run a white silicone to seal ?

Steve · 12-01-2016 11:12pm

The foam will insulate, the plastic trim is just for looks. Sealing it with a mastic will work just as well if you can get an acceptable finish.

Use 'Fix-all' or white Tec7 rather than silicone, you can clean it off with white spirit and 'polish' the bead as it sets without getting it all over the frame.

ChewyLuey · 13-01-2016 11:33am

Thanks to all for the advice here !

budhabob · 13-01-2016 2:32pm

Not to hijack the thread, but where can you buy the PVC "strips" described above?

DublinDilbert · 13-01-2016 3:20pm

budhabob wrote: »

Not to hijack the thread, but where can you buy the PVC "strips" described above?

Maybe the lid off white electrical trunking?

budhabob · 14-01-2016 11:49am

DublinDilbert wrote: »

Maybe the lid off white electrical trunking?

Oh ya, potentially. I have a possible DIY job that it would be ideal for, just wasnt quiet sure where I could get it from.

sky6 · 14-01-2016 5:15pm

budhabob wrote: »

Not to hijack the thread, but where can you buy the PVC "strips" described above?

There's a Company of Greens Rd in Tallaght that sells it in different widths from
25 mm 50mm 75mm 100mm and 150mm

I've no connection with them but I have bought this and other products from them at different times.

budhabob · 15-01-2016 2:01pm

sky6 wrote: »

There's a Company of Greens Rd in Tallaght that sells it in different widths from
25 mm 50mm 75mm 100mm and 150mm

I've no connection with them but I have bought this and other products from them at different times.

Cheers for this, will take some measurements and check them out.

Gap Between Window Frame and Brickwork

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