[Garrett]

Was wondering if anyone has a cool way of dealing with the expansion and contraction on their ooutside corners on their wrap boards, I have done butt joints and miterd joints. both looked good but then with a temp change not so good. Thank you for any replies!

[John Hyatt]

Most of the time when the skirting warps around its because its fastened to the flush cut decking,no overhang. This makes for a direct link almost a chanell for the water to get in.

I install endgrain trim usually 1 1/2'' wide all around the project the skirting bumbs up under it. Bang Bang Done. John

[genecarp]

always has been a problem, i use both azek and evergrain, evergrain when we dont want white, it is 1/2" by 12" if i am using grey, i have experimented with leaving a 1/4'' space , and grey silicone, butt joint, miters would never look good with space, this works ok, everything is a trade off, composites move, thats the deal. cedar is pretty stable, mat should be dry dry dry, glue corners, stainless screws, should do the job

[mawe54180]

I always recomend leaving the deck boards overhang the edge of the deck, and run the fascia vertically. This eliminates long pieces that to help minimize the expansion and contraction.
Mark

[Bone Saw]

I don't use composite facia for this very reason, I stain the framing and use decking for "end cut" capping with grooved decking, and no capping and a 1" reveal for non grooved, zero problems, gives some added dimension to the perimeter

[Troutstreamguy]

Is it possible that the fascia problems have more to with the treated wood shrinking as it dries out?

[Jason Whipple]

I've always done well with 1" Hardie XLD Trim. It needs to be at least a foot off the ground though.