The two organisations are examining all aspects of windows and door production, from materials supplied to design, coatings and the manufacturing process.
The issue was flagged by the BWF and discussed at the recent meeting of the TTF National Softwood Division.
"We have received a number of reports that a significant amount of product is showing more movement than we would expect and we are looking at anything that could be the reason for that," said BWF technical manager Kevin Underwood.
"The TTF is talking to suppliers and the BWF is looking at procurement and coatings, things like the profile design and things that could go wrong in the factory. This has raised its head and we are talking through the issues; we are not pointing fingers nor are we making claims about the size of the problem."
BWF members said moisture content was very low and they would prefer it in the 18-20% range. The TTF said some manufacturers of laminated joinery needed the content to be below 12% to allow the glue to work properly and it was important BWF members stipulated the moisture content for their product.
Mr Underwood said in the seasonal cycle some timber had gone out at 6% and by February was as high as 20%. "That could be a 2-3% change in dimensions and that will have an effect on the performance of the products.
"It is about trying to control the moisture content overall and hopefully next year this will be a thing of the past."
