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Questions tagged [waterproofing]

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31 votes
9 answers
237k views

Can I paint or seal a very moist basement floor to make it waterproof?

My basement has a slight dampness issue, where if I leave things on the floor they will get wet. There are no leaks and no standing water, the moisture seems to be wicking up through the concrete. I ...
Tester101's user avatar
  • 132k
27 votes
3 answers
5k views

Does this downspout design make sense?

I've recently started smelling a musty smell in my upstairs bedroom. The bedroom closet just happens to be where the downspout from the main roof drains onto the roof for my garage and creates a kind ...
philmonroe's user avatar
23 votes
5 answers
5k views

How can I monitor my roof to detect roof leaks before they cause damage?

A lot of questions have been asked about how to locate a leak in a roof, but you can only locate a leak that you know exists, and the first noticeable sign that there is anything wrong might be ...
interfect's user avatar
  • 333
19 votes
2 answers
3k views

Is it better to waterproof a basement from the outside or the inside?

Is it better to waterproof a basement from the outside or the inside? I've heard different things about this. We have a home built in the 40's on a cinder-block foundation. One side of the house is ...
Kyle's user avatar
  • 411
16 votes
4 answers
13k views

French Drain: Why do I need 3" of rock bedding beneath the pipe?

I'm having issues with a leaky basement in the Portland area. There's dirt, mud, and vegetation outside of my foundation wall, and it's absorbing lots of rainwater. 4 feet of it is inside my property ...
M -'s user avatar
  • 496
14 votes
1 answer
8k views

How do I correctly install ceramic floor tile?

How do I correctly install ceramic floor tile? There's lots of talk about using backerboard and waterproofing membranes, what an acceptable floor deflection is, different grout and thinset additives, ...
Mazura's user avatar
  • 13.4k
13 votes
4 answers
9k views

How important is Tyvek/house wrap for a house with metal siding?

I'm building a tiny house and it will have metal siding. My dad has worked a lot of construction and says he's never installed a house wrap for a metal building in his life. Most info I can find ...
Mark's user avatar
  • 291
11 votes
1 answer
3k views

Why is my clear wood finish drying orange?

I bought an outdoor wooden planter online. It wasn't sealed so I wanted to treat it to help protect it from weather and water. The wood was already stained gray so I went with a "Clear ...
David K's user avatar
  • 349
11 votes
1 answer
8k views

Does tar roof patch on EDPM rubber roof cause damage?

I applied Henry 208 roof patch on my EDPM rubber roof. It looks fine and seems to be holding up, however I'm concerned that it may react with the EDPM chemicals. I have heard this can happen with ...
Danny's user avatar
  • 253
10 votes
4 answers
93k views

Can I create a water proof barrier to keep my garage & home from flooding?

Every couple of years, the area where I live gets a huge storm. The result being that the flood of water that collects in the streets overpowers my driveway and runs down to my garage. I put in a ...
user2316614's user avatar
9 votes
5 answers
9k views

How can I store canned spray foam insulation for reuse weeks or months later?

The nozzle of the spray bottle hardens quickly which makes it impossible to use after a few days and even hours.
JinSnow's user avatar
  • 526
8 votes
1 answer
319 views

Flooding In New Construction Building

This weekend, water was observed flowing up, through the floor and through other joints, into the building - making a swimming pool we didn't ask for! Some Background We currently have a project ...
losthorse's user avatar
  • 181
8 votes
1 answer
2k views

What should I do about my rendering & damp-proof course?

I have a house that was built around 1890 and is of brick construction with a rendered band running around the base which also forms square edged columns around the front door. Until recently the ...
Gideon Purser's user avatar
7 votes
3 answers
7k views

Should a tiled shower ceiling have cement board instead of drywall?

My contractor used mold resistant drywall for ceiling in shower stall; ceiling will be tiled. The stall will be surrounded by frameless glass and there will be about 4" gap from ceiling and the ...
positron's user avatar
  • 289
7 votes
3 answers
7k views

Water leaking inside outdoor electrical box. What should I do?

I have some very old outdoor path lights in my front yard (see pic). Recently I found that they trip my upstream GFCI outlet when they were turned on by the timer at night. After some investigation, I ...
Ivan Xiao's user avatar
  • 171
7 votes
7 answers
3k views

How to fix water missing gutter? [duplicate]

When it rains, water from the second floor downspout misses the first floor gutter on the right side and comes down the siding (as shown below). You can see the evidence (vegetation) growing to the ...
Nate's user avatar
  • 161
7 votes
5 answers
28k views

Can I erect a barrier to keep water out of my garage?

Within the last year, I have purchased an 80+ year-old house. The house has a sealed blacktop driveway that runs parallel to the house. The house has an integrated garage with swing-open (horizontally ...
San Jacinto's user avatar
7 votes
4 answers
15k views

How can I fuse galvanized sheet metal together so that it is water tight?

Is it possible to fuse sheets of the galvanized sheet metal that they sell at the hardware store for roofing together so that it is water tight? I was thinking that this may be able to be ...
Chris Dutrow's user avatar
7 votes
5 answers
37k views

Is mortar waterproof?

I was advised by a professional that mortar is waterproof, however sources online are telling me that it's not. So is mortar waterproof or not? Does waterproofness vary by mortar classification (e.g. ...
AlfaZulu's user avatar
  • 215
7 votes
1 answer
16k views

How do I install electrical through existing stucco (e.g. "old work")

Is there such a thing as an "old work" stucco junction box? Rather than cutting and flashing a 4" hole for a new junction box, can I cut a 1/2 hole for the non-metallic cable, and attach some sort of ...
Bryce's user avatar
  • 10.9k
7 votes
2 answers
66k views

Buying a House On Underground Spring. What to do?

My fiancé and I are under contract on a new home which we are concerned it might be built on an underground spring. There are two sump pumps in the house, on opposite corners of the house. Both times ...
dberm22's user avatar
  • 424
7 votes
1 answer
15k views

What to do if my sump is bone-dry?

My wife has been suffering the past two years with severe asthma symptoms (never had asthma before this). She's been advised that it's probably mold. We asked a company to look for moisture ...
Dave Clausen's user avatar
7 votes
4 answers
9k views

How best can I seal up an old coal door?

Alongside my house is an old coal door that was never properly sealed. Some caulk was added around the metal exterior door, and a piece of plywood nailed over the interior opening (more to keep out ...
Joe Shaw's user avatar
  • 435
7 votes
1 answer
596 views

Cladding removed from sides of dormer, should it be covered if not being replaced for a week?

I'm having all of the soffits, fascias & guttering replaced along with cladding to the sides of upstairs dormer windows. The upstairs windows look like this picture: The guy doing the work ...
Jamiec's user avatar
  • 173
7 votes
1 answer
25k views

Attaching a pergola (or deck) to vinyl siding

Building a structure which is attached to a house usually involves a plate which is bolted to the existing building, typically a 2x8, or 2x10. I understand how to structurally attach this, my concern ...
Scivitri's user avatar
  • 2,128
7 votes
2 answers
1k views

What are these vents in the foundation mortar for?

Throughout the interior side of my 1925 brick foundation are little metal vents embedded in the mortar at irregular intervals. Neither our home inspector nor our real estate agent knew exactly what ...
Joe Shaw's user avatar
  • 435
6 votes
3 answers
5k views

Water leakage in new house - is this common or an issue?

I am planning to purchase a house from some builder and I have finalized some properties. All are newly constructed houses. In one of it, I can see some water leakage in walls due to rain. Is this ...
Dhanapal's user avatar
  • 179
6 votes
3 answers
1k views

What is this exterior electrical box and how do I cover it properly?

I'm the new owner of a 1956 Southern California home and discovered this curious plate on the stucco exterior: It's above, and to the left of the front door. There is a working sconce mounted above ...
swrobel's user avatar
  • 215
6 votes
3 answers
7k views

Can I install a row of bricks on a slab to support a shed?

I am designing a shed for my garden and I would like to build the shed inset from the concrete base by about 20cm on each side. The concrete base already exists (built before I brought my house). It ...
Alex_Wood's user avatar
6 votes
3 answers
2k views

How would you protect a plywood container from moisture and abrasion?

We have a pitching mound that sees basement and outdoor use. We try to keep it out of the rain but it does sit on wet ground sometimes. It is made of plywood and has a number of hinges/brackets ...
DMoore's user avatar
  • 49.2k
6 votes
2 answers
31k views

How do I seal a large gap between slabs to avoid freeze/thaw heaving?

I have a very large slab patio on the back of my home in Southern MN that has pulled away from the house about 6-8" due to freeze/thaw heaving. The previous owners have filled the gap with river rocks,...
cabbey's user avatar
  • 980
6 votes
3 answers
61k views

When should a waterproof membrane be installed for shower tiling?

For what kinds of wall structure - tile type combinations a waterproof membrane should be used between walls and tiles?
ipavlic's user avatar
  • 403
6 votes
6 answers
64k views

Preventing Clogging/Flooding at bottom of exterior basement steps

I just purchased a house this weekend, and moved in yesterday. I live in MD (USA), and there just happened to be a torrential downpour yesterday after we moved in. I went downstairs to check my sump ...
dberm22's user avatar
  • 424
6 votes
2 answers
33k views

How high must a shower pan curb be?

Releated to: Building on top of 3/4'' plywood subfloor (link for impatient: http://www.mrmoneymustache.com/2012/12/21/how-to-make-a-relatively-sweet-shower-cheap/) I would like to know how ...
cbrulak's user avatar
  • 761
6 votes
2 answers
15k views

How can I remove wax from a wooden counter so I can resurface it with Danish oil?

A wooden (beech) kitchen counter has been treated with cheap wax in the past, and is now discolouring because of food preparation and constant splashing. I've decided to make a better job using Danish ...
Greg's user avatar
  • 193
6 votes
2 answers
60k views

Should light bulbs above showers be "steam proof"?

In replacing the lighting in my apartment with LED bulbs, I noticed that the recessed can lighting above the shower (to be fair, the light is centered on the shower curtain) does not appear to be ...
Paul Hazen's user avatar
6 votes
2 answers
11k views

What should I use as backing for mosaic accent tiles that are a different thickness than the main field tiles?

I noticed, too late (during install), that the mosaic tile my wife chose for accent in our shower is a different depth than the regular tile we're using. The mosaic tiles are about 1/8-3/16" thinner ...
Steve Siebert's user avatar
6 votes
2 answers
12k views

Can I put drylok over older drylok

I've got an old 1953 basement that I want to finish. The walls are in pretty good shape. Looks like the previous owner used drylok. Some areas show some signs of staining, and efflorescence. Can ...
Scott's user avatar
  • 365
6 votes
2 answers
8k views

What type of subflooring should I use for a basement?

My basement has wall-to-wall carpet in the two bedrooms and living area. The carpet was probably from the 70's when the house was built and we decided to remove it. After removing the carpet from ...
SwDevMan81's user avatar
6 votes
1 answer
261 views

What do I need to know before selecting and installing a cat/pet door in a door?

We want to (finally) install a pet door for our cat. It will most likely be a model that will install in the laundry room door, the optimal location for it in our house. This brings me to my first ...
CyberSkull's user avatar
6 votes
3 answers
2k views

What's the best way to waterproof a concrete structure for a tropical climate?

I am constructing a building from reinforced concrete and AAC blocks in Indonesia. The building will have a flat (2% sloping) roof of reinforced concrete. This will be exposed to tropical rain, as ...
thelawnet's user avatar
  • 598
6 votes
1 answer
784 views

Is it normal for the concrete covering my interior perimeter drain to be damp?

I inherited an interior perimeter drain with a sump-pump as part of a basement waterproofing system when I purchased my new home two years ago. Since then I have noticed that along the seam of the ...
Chris Heller's user avatar
5 votes
3 answers
1k views

Does the rough-in valve trim install onto backer board or tile?

I have installed cement board and waterproof coated it. My next step is to install tile. I have a 4" access hole in the backer board for the rough-in valve per the instructions. The instructions ...
Scott Lin's user avatar
  • 483
5 votes
5 answers
5k views

How can I locate and repair a leak on a flat roof?

I recently experienced a roof leak on a heavy raining day in the east coast. Picture 1: This is the interior ceiling. I tore open the ceiling sheetrock and could see that water was dripping from the ...
Jay Roy's user avatar
  • 91
5 votes
5 answers
24k views

How can I secure this faucet: the pipe is not secured inside the wall

The pipe leading to this exterior faucet was apparently never secured inside the wall (contractor mistake when the wall was built): So it pulls in and out in use, and no doubt lets rain water drip ...
Bryce's user avatar
  • 10.9k
5 votes
3 answers
2k views

How can I protect this exterior outlet from water and prevent smoke leakage to the interior?

I have an exterior outlet in a carport that I want to protect from water and smoke. Water: Rain cannot reach this outlet. I am only concerned about accidental water sprays from either the hose nozzle ...
Th4t Guy's user avatar
  • 151
5 votes
5 answers
53k views

What should I use to repair plaster in a bathroom?

Our house was built in 1941, so all original walls are plaster (I'm assuming lath and plaster?). This is true for the bathroom in question. The walls in this bathroom are plaster, and are painted with ...
MegaMatt's user avatar
  • 231
5 votes
5 answers
35k views

What is the method to seal a concrete roof?

We are staying in a home which has a concrete roof. Now we are facing leakage in the roof during rainy seasons. What do we have to do? How do we protect the roof from leaks?
Murali's user avatar
  • 153
5 votes
4 answers
2k views

Does a device exist that can help find the source of a leak in a flat roof?

My Dad has a flat roof over his garage. It's covered with tar and felt. We had an unusually hard and cold winter last year (Republic of Ireland) and since then the roof has developed a leak. We've ...
Binary Worrier's user avatar
5 votes
3 answers
970 views

Should I install external basement insulation that does not extend above ground?

Question : Is there a way to calculate energy savings for external, 2inch insulation on basement walls that does not extend above the soil surface, leaving the top couple feet of foundation wall ...
derekv's user avatar
  • 195

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