Gaps between our windows and brickwork - is this normal?

Siatros · Feb 24, 2008 11:15 pm

We just did our final inspection of our PD house.

We have been generally quite happy with the work and process so far.

Nevertheless, on our inspection we noted that many windows had a gap of approx 2cm between their outer frame and the brick work. The gaps have been covered by rubber flaps. If I lift the flap i can see the sisilation (spel?). Looking at other houses, I dont see this gap. We are novices at this and we have no idea if this is somehting to be concerned about or its some kind of building technique. Something tells us these gaps shouldnt be there though - who knows what can creep into the gaps! I can furnish photos if needed.

Many thanks for any advice ...
Steve

ausdesign · Feb 25, 2008 7:20 am

Siatros, I assume you're referring to a gap to the sill brick & if this is the case then the minimum requirement is for a 5mm gap in a single or lower storey window, 10mm for an upper storey window & double these figures if an unseasoned timber frame is used.

Siatros · Feb 25, 2008 6:15 pm

Thanks for your reply Ausdesign!

That seems to be the case - there is a series of angled bricks which make the slll and the gap is between them and the bottom of the window, which is covered by a rubber flap.

Out of interest, why is this case? Can you point me to any sites which dicusses this in more detail as I would like to be as informed as I can prior to handover on Friday.

Thanks again for your prompt response!

Steve

webbiegareth · Dec 22, 2009 5:07 pm

I created a thread earlier today about this... I couldn't find the question answered anywhere - but finally found this thread! (Whoops, didn't really need to create my own thread).

What happened with this? It is normal? One of my windows has a 10 -15mm gap between the bottom of the window frame and the sill bricks (the angled bricks). The rubber flap does reach the bricks though, but it's also a bit worrying that the rubber flap can be lifted and I can see the sissalation and a bit of the framework.

The builder was saying it's good for the house to have the gap as it helps get airflow.... much like the weeps. But isn't having a gap under the window more likely to let water in? Or during the nights, allow more condensation to form directly onto the frame since there's no protection from the bricks?