Asked on Oct 06, 2018

Should my deck be growing mushrooms?

by Suzy

Our deck is about 10-15 yeats old. We have only lived here four years. We enjoy our backyard and deck daily. From bird feeding and watching to sitting in our park like tree canopy to grilling and entertaining. We would be lost without our deck. We do not have the funds to replace the deck but I worry about the safety after mushrooms started to grow from some of the split floor boards. What should we do?

  6 answers
  • Replace the board, possible the boards next to it and the joist under the boards. Then wash the deck with deck cleaner and seal the deck with a stain, every year.

    Plus in winter climates remove snow from the deck.

  • Polly Fuller Polly Fuller on Oct 06, 2018

    fungus grows on rotten wood. replace the pieces that are rotting. try pouring bleach on the fungus, killing it, scraping out the rotten wood and fill it with a wood filler. think your deck could use a sealer.

  • Yeah, that's not good -- it means there's a lot of moisture in the wood. Can you replace just the particular boards that have this? Otherwise they're going to rot out quick and break apart. You don't have to replace the whole deck, just the trouble pieces.

  • William William on Oct 06, 2018

    Replace the boards. They are beyond rotting when mushroom fungus is feeding on the wood. wash the deck down with deck cleaner, stain it with deck stain or just a deck waterproofer. Decks need to be maintained about every four years.

  • Tom Stuart Tom Stuart on Oct 06, 2018

    Polly Fuller is correct. You need to clean out the decaying wood until you reach good wood. I have had that problem with a pergola. I used a rotary tool with a grinding head to clean out the debris. I used a epoxy wood filler and painted it. That was 10 years ago and it still looks good.

    Your deck should be cleaned and sealed. A stain may help cover the patches. Check with a good hardware store to see what is best for your location. Even wood exposed to the weather will last a long time if it has a protective coat on it.

    This might give you some more information. You can also search YouTube for “deck repair”.

  • Jessie Jessie on Oct 08, 2018

    I'm not sure about the mushrooms but I must say that that is ONE CUTE DOG!!!!!!!