We had some flooding occur last year due to a sprinkler line breaking and it has caused the wood-like fiber board between the concrete patio and the house exterior walls to swell and rot. What replacement do you recommend and how would you recommend replacing it?

Thanks

If I Understand What This, Its Just An Expansion Joint, You Can Buy These At Lowe's Or Home Depot, The 8' Long By I Think 3 Or 4", You Should Be Able To Pry The Old One Out And Put A New One In, Some Times They'll Use A Treated 1x4, What It Sounds Like Is Just A Fiber Board, Im Surprised Its Rotted