Topic: New house double glazing drip tray

New house double glazing drip tray 

Now that I have finished insulating my house I am looking at double glazing.

The new houses being built up the road from me have the latest double glazing installed but they have a drip tray and drains slots around the bottom of the window why is this needed?

I felt the bottom of the window and could feel the air from outside coming through.
Is this the only option or is there a better product available

Re: New house double glazing drip tray 

Do you have a photo? What material is it made of ?
What you call drip tray is most likely not really a tray, it is rather a flashing or sill which is common with recessed windows.
The drainage hole are there to drain any water that might enter the rebate out.
It is technically needed even for the most adavnced European R 1.2 or R 1.5 systems but it does not have any effect on the insulation. The inner rubber seal is for air tightness and the outer for weathertightness

Re: New house double glazing drip tray 

They were aluminium, which from my school days is a really good conductor.
All the windows had 4 drain holes

Re: New house double glazing drip tray 

Yes Aluminium is used in many applications because it is a good conductor.
Aluminium is ok for windows if it is thermally broken but the good systems (good insulation and real hardware) such as Schuco are quite expensive.
Best value and performance for money would be uPVC or if you want timber/aluminium Eurovision would be a good choice, more expensive than uPVC though.

Re: New house double glazing drip tray 

Aluminium windows need like any other system drainage holes to drain out any external water entering the rebate.
Some of the real bad windows have drainage holes all the way through for the condensation from inside and even a little channel to collect the condensation.
A bit like roofing with free buckets ;-)

Re: New house double glazing drip tray 

Looks like uPVC would be good very good insulator.
Can you recommend suppliers in Wellington.
I did see in Europe they fill the cavity with Argon

Re: New house double glazing drip tray 

Have a look at eurowindows.co.nz