What is the best exterior caulk for cedar?
Posted by admin
Gerald R asked:
I have two cedar sided bay windows which has several outside angled butt joints. I am having difficulty filling the gaps that have developed where the cedar boards meet. Last year I used OSI Professional Quad caulk and it failed to do the job. It is so thick that it is difficult to get the product very far into the joints. Over the seasons the expansion and contraction of the wood causes the caulk to split and a new gap appears. My aluminum windows are caulked to the cedar with an apparent rubber based caulk and they hold up fine even after 17 years. I am considering going to a similar product but need advice as to manufacturer. Help.
Larry
I have two cedar sided bay windows which has several outside angled butt joints. I am having difficulty filling the gaps that have developed where the cedar boards meet. Last year I used OSI Professional Quad caulk and it failed to do the job. It is so thick that it is difficult to get the product very far into the joints. Over the seasons the expansion and contraction of the wood causes the caulk to split and a new gap appears. My aluminum windows are caulked to the cedar with an apparent rubber based caulk and they hold up fine even after 17 years. I am considering going to a similar product but need advice as to manufacturer. Help.
Larry
October 19th, 2007 at 1:38 am
The people who sell cedar siding sell the OSI caulk line to seal joints on cedar. There is one other product that might be of use, try a product call Vulkum, not sure on correct spelling.