Draught proofing UPVC sash window

BUFF

there are different heights of brush pile seal (typically every couple of mm from ~5 - ~12mm)  but they are compressible.
It might be easier to just go with something like horsewithnoname linked earlier although they will be visible whereas replacing the existing seals shouldn't be.

CombatClaret

This worked on my patio doors which had a draft at the top.
https://www.amazon.co.uk/gp/product/B07XD44R34

Give the little internal surface a bit of a clean so they apply then maybe try taping it so the non-stick bit sits on top of the current brush seal. That might be enough to fill the gap the air is getting through.
Cheap enough to attempt. 

muffinek

Just a quick question. My current seals are like slide in rather than self adhesive, something like below. 

My problem is that when I measured current one their base seemed to be 7mm but I can find only 6.5mm. Would it be a big problem if I got 6.5mm instead? 


https://www.mightonproducts.com/brush-seal-plastic-5-5mm-100m-coil

BUFF

that pile is actually 4.5mm across the base. The pile carrier it inserts to may be ~7mm though (Mighton's is 7.5mm).

muffinek

Correct. I used Mighton as an example. I pulled existing one out a bit to measure and it was 7mm

muffinek

I have just taken out seals and the base is certainly 7mm. I can't find it anywhere, looks like 4.8mm-5mm is standard. I just fitted that to the top and it barely holds can't replace side seals though as 4.8mm moves too much. Could someone pls help me out where I can find replacement for below? 

BUFF

any use? https://www.ebay.co.uk/itm/234647213088?
depending upon how much you need may be cheaper to go with someone like https://www.nichelocks.com/Security-Products/Multi-Point-Locks/Door/Accessory/Strips-Seals/POLYBOND-Pile-Brush-Seal-7mm-High-6.9mm-Backing-1m?

Have you asked a local double glazing/fabricating company if they can help at all with supply only for replacement seals?

Billxx

muffinek said:

As far as I can see it is predominately top and one of the sides. How do I get right thickness of seals or they are just standard thickness? 

Google "window gaskets".  There is a site on-line that will sell you a sample pack of bubble gaskets or the other type (can't remember what they are called).  This will help you narrow down what kind of gasket/seal you need.