DIY waterproof front porch

Easy Fix For Porch Leaking Into Basement

Years ago, many homes in the Northeast had front porches built directly over the basement foundation. The only thing holding back the cold snowy weather and the rain was 1 inch thick tongue and groove pressure treated porch decking that was painted to seal it from the elements and keep the water out.

This is not a good idea. It doesn’t take long for the paint to peel, and seasonal temperature changes will cause expansion and contraction, leaving hairline gaps that break the paint seal on the tongue and groove line. When bad rain storms hit and the wind blows just right, the covered roof offers little protection and the rain leaks into the basement. During the winter months, blowing snow sits on top of the porch, then on slightly warmer days it melts and leaks into the basement.

The water leaking down saturates the wood between the tongue and groove. The tight space blocks air flow and keeps the wood damp, leading to rot and decay.

fix for leaking porch into basement

This avid DIY guy and property investor in Buffalo, NY was forced to paint the porch every year and clear off snow throughout the winter. This was a lot of maintenance and just not always possible. When he bought the property, he knew it would all need to be redone. He started searching for solutions to create a water proof porch surface that would not rot and continuously leak into the basement.

He found the only products really made for this solution were special exterior vinyl sheets that could only be purchased and installed by certified installers. These sheets didn’t even come wide enough to cover his entire porch, which meant seams would need to be thermo-welded with a special heat gun.

Our customer found the average installation cost for these systems was $4,000 – $5,000, and quite frankly he did not like the look of these products. He said they just looked like the cheap flooring sheet goods you put on the interior of your house. In addition, he was having a hard time trusting the longevity of these products since they haven’t been around that long. He also worried that the seams would eventually fail or tear as shoes caught on on them.

It reminded him of the composite decking products that have had so many product failures and class action lawsuits. To top it all off, as a DIY guy who takes pride in doing quality work himself, paying someone that kind of money to lay down some sheets and essentially melt them together with a heat gun was like rubbing nails down a chalkboard for this home owner.

Here’s the solution our customer came up with: our Ipe deck tiles. They look much better, allowed him to save a lot of money by doing it himself, and kept everything rot-resistant and waterproof.

First he laid a few tiles the length of the porch to see where they would need to be cut:

He decided he wanted to have a continuous 6 inch Ipe board screwed into the outer rim joist and framing the entire porch. This way the tiles could float without any penetrations in the ice and water shield. Once he accounted for the width of the picture framed border, he cut the tiles to fit and decided to put the cut pieces against the house so there would be full tiles on the outermost edge of the porch.

He fixed a few rotted spots in the original porch by cutting them out and replacing them with one inch thick pressure treated wood, matching the existing material. Next he laid ice and water shield over the entire porch according to the manufacturer’s requirements, overlapping the ice and water shield appropriately and keeping everything water positive – starting at the outside edge of the porch and overlapping the seams as you work your way toward the house.

Now that the entire porch was waterproofed, it formed a suitable foundation on which to float the tiles.

One important and obvious note to consider: make sure your front door will clear the tiles when floating on top with the deck tile connectors. In this case our customer had enough room, but he was planning on replacing the old outward-swinging door with an inward-swinging one, so it wouldn’t matter anyway.

We custom milled a 2 x 6 board to match the thickness of our 20 x 20 Ipe deck tiles. This board served as the picture frame for the deck tiles.

He also replaced the old crumbling concrete steps with Ipe decking, white vinyl risers, and vinyl railing.

ipe deck tiles on front porch

DIY waterproof front porch

ipe deck tiles

Our customer said he’s been absolutely thrilled with the results, and the deck tiles have exceeded his expectations. He said the installation was a breeze since they just snap together with the DeckWise tile connectors. This picture is at the end of the first winter in Buffalo (you can see the snow pile in the back at the curb). The deck tiles still look amazing and he still can’t believe how much money he saved opposed to those ugly vinyl sheet products.

He needed 65 of our 20 x 20 Ipe deck tiles, which cost him just over $1,000. He purchased the railings from a local building supply store for around $700, and he got the Ipe deck boards, DeckWise tile connectors, and vinyl products for his risers and skirting. In the end, he completed the project for around $2,000.

Everyone in the neighborhood has complimented the new look – even the pizza delivery guy!

You can purchase deck tiles directly from us and we’ll ship them to your house or job site. No job is too big or too small.

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4 thoughts on “Easy Fix For Porch Leaking Into Basement

  1. Jack Mosgrove

    I have an uncovered concrete porch over a basement area. While I’ve painted it several times, I’m still getting some seepage of water into the basement. Would your deck tiles be a good solution. Since they are not over a wood porch, would one glue them down?

  2. theipeguy Post author

    The deck tiles alone would not prevent your concrete porch from leaking so you would need to put down a waterproofing membrane first and then float the deck tiles over the top of that.

  3. Caren Little

    I have a tiled porch which I thought would stop leaking and seepage of water into the basement, however, I continue to have seepage, especially where the porch meets the house. Is there any fix at this point. The porch has ceramic tiles.

  4. theipeguy Post author

    Ceramic tile itself would not make you porch water proof if anything it could help water collect and depending on how pitched your porch is the water could drain where the porch meets the house like you are experiencing. This will eventually lead to rot also depending on how the tile was installed they could be trapping moisture in between the tile and your wood porch which will lead to faster rot and decay. You need to remove the first row of siding and probably all the ceramic tiles and start with a waterproofing membrane like ice and water shield like done on this house. You must start applying the water shield on the outer edge of the porch first and work your way back to the house overlapping the ice and water shield as recommended by the manufacturer to keep everything water positive. Once you get up to the house where you’ve removed the first row of siding you would run the water shield up the house a few inches then put your siding back on and float these deck tiles over the top of the porch.

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