How To Fix A Sagging Porch Floor

Fix the sagging deck the game plan.

How to fix a sagging porch floor.

Water from a leak flooding or waterproofing problems can rot subfloors floors and damage joists. This is typically a result of poor foundation work or no foundation at all. Repairs will involved drying out the wet area getting. A plywood subfloor will bridge any minor waves in the existing floor and leveling compound would help too.

Sagging porch lines are common on older homes. On the top side of the floor another fix it idea to lay down new hardwood over the existing floor. Make sure the porch floor has a slight slope to it between 1 8 and per linear foot for tongue and groove floors. Things to consider with jack up a porch roof the prep.

Join two sections of 2x6 for the temporary beam. Thre ways to fix a sagging or sloping floor. You will have to make sure your joists can handle the addition of considerably more weight from the plywood subfloor and any floor coverings. Depending upon the conditions it is possible to strengthen or repair existing framing members such as floor joists or roof rafters by adding reinforcing material sandwiching the member on either side with plywood is sometimes worthwhile but the plywood must be installed correctly for greatest strength.

So to begin i removed the existing counter flashing running about 5 courses up this was as easy as finding nails and prying. Decking with gaps doesn t require the watershed angle. If the porch is deeper than 8 use a slope closer to 1 8 per foot to avoid a pronounced slant if the porch floor isn t tongue and groove allow at least between new or replacement boards as you lay them to. With the sections joined sister the two to create a 20 foot length image 2 which will span the porch.

In this style framing the entire structure will sag in that area usually causing cracks in walls ceilings or doors rubbing their frame you will need a proper footing under the post jack because your lifting much more weight if your correcting a sagging interior floor in ether style framing locate the main support beam in that area the large. Start by fastening temporary wood blocks to the rafter tails image 1. I guesstimate my deck is sloping a few inches over 12. In raising the roof i knew was going to have to reset the roof s flashing as it meets a sidewall of the house.

Depending on exactly what needs to be repaired and the scale of the damage the cost to fix a floor sagging from water damage can cost between 2 000 and 6 000. From what i ve read a deck without gaps in the flooring should slope about 1 4 over 12 to allow for watershed.