The first thing that needs to be done is to clean the mildew off the sash; a fan should be used to dry the wood at the corner. Once the wood is fairly dry, I’d use a long squeeze clamp to see if ...

The first thing that needs to be done is to remove the mildew from the sash. Start by using a fan to dry the wood at the corner. Once the wood is fairly dry, use a long squeeze clamp to try to ...