
Every winter, a few weeks after the heat comes on, the doors in our houses start to shrink. If you have traditional 4-panel or 6-panel doors, the panels show white edges, or even bare wood on both sides where the panel has pulled back from the frame. It happens every year, and it’s all perfectly normal.
Why does a wood door shrink in winter?
If it had to do with temperature, it would be the opposite effect (it would expand during the summer when it is hot). i think humidity is the culprit too. it's generally actually drier in the winter, and dry wood tends to shrink, and it just may be that his whole house shrinks a bit, and the door, less so.
Why does Kazan's door shrink in the winter?
i think humidity is the culprit too. it's generally actually drier in the winter, and dry wood tends to shrink, and it just may be that his whole house shrinks a bit, and the door, less so. Yes, it could also be a problem with the frame of the door. Just checked the climate of Kazan on the wiki page and it is indeed a humid continental climate.
How does cold weather affect your entry door?
Cold and wet winter weather can put a damper on your entry door---and it can even ruin its appearance! Moisture from winter weather can cause your door to fade and lose its vibrant color.
Why does my front door sag in the winter?
During the wintertime, screws may come loose from your door. Like door binding, this is also caused by changes in humidity and temperature. While this may not seem like a big deal, it can cause several issues. Loose screws can cause your door to sag and not fit squarely within the frame.

Do wooden doors shrink in winter?
Every winter, a few weeks after the heat comes on, the doors in our houses start to shrink. If you have traditional 4-panel or 6-panel doors, the panels show white edges, or even bare wood on both sides where the panel has pulled back from the frame. It happens every year, and it's all perfectly normal.
Do doors shrink in the cold?
Shrinking and Warping Wooden window frames, doors and door frames can shrink in extreme cold, and in extreme humidity, they can begin to warp or bow significantly. The same can be said for most builder-grade PVC windows and doors.
Why do doors become tight in winter?
When the weather gets chillier, the wooden fibres which make up your door will begin to contract. When things get warmer again, those same fibres will expand. After a while, this cycle of expansion and contraction will cause a door to become the wrong size and shape for its frame.
How do you fix a swollen door in the winter?
Use Heat Gun or Hairdryer to Fix the Swollen Door So, you can use the hairdryer or the heat gun to take out the moisture. Once you put the heat gun on the swollen portion of wood, the air or the moisture trapped inside the door escapes into the air again.
Do doors expand or contract in winter?
While dry winter air holds less humidity than in the summer, doors that absorb moisture from warmer weather will contract as the seasons change. However, exposure to prolonged moisture can cause door swelling in winter weather.
Will a swollen door go back to normal?
Will a Swollen Door Go Back To Normal? Wood can expand and contract as it is exposed to moisture and changes in climate. However, if a door is swollen a great deal due to heat or moisture exposure, it is unlikely that it will revert to its original shape.
How do you stop a wooden door from swelling in the winter?
Varnish the doors, so it creates a protective seal and a tougher exterior and prevents the moisture from being absorbed as easily by the wood. For a quick fix, use a hair dryer to blast some heat around the area which is sticking and evaporate the moisture to allow you to close the door.
Why won't my door close when it's cold?
Cold temperatures will cause your door to expand, which means it may stick and be difficult to close. If it's made of wood, it may soak up water from humidity and eventually become damaged. Door parts, including the frame, hinges, jamb, and hardware, can also be damaged by extreme cold.
How do I stop my front door from swelling?
Solutions to Address the Swelling of DoorsAir Drying. For minor swelling, you can use any of the following to fix the door: ... Sanding. You can also use some sandpaper or sander to get the door sanded and absorb the moisture from the door. ... Sealing/Painting/Polishing. ... Replacing the Door.
Does wood expand in winter?
Does wood expand when cooled? No, temperature changes don't do anything to wood directly. Wood reacts to moisture in the air and the wood itself.
Why is my door suddenly sticking?
Doors usually stick in summer, when relative humidity is high. The moisture expands the wood, making your doors too tight in their frames. In the winter, humidity levels are usually lower, because cooler air cannot hold as much moisture.
How do you adjust a swollen door?
Heat Gun or Hairdryer Method When you set the heat gun on the swollen wood, the wetness inside escapes back into the air. Hold the drying tool like 30cm away so that you don't burn the wood. Use a rotating fan for painted doors. You can bring them down and repaint if the color starts flaking.
Why did my door shrink?
Your wooden door may shrink or swell because of changing weather conditions, especially if it's old or unprotected. The swollen wood may be a part of the door or the door frame; either way, your door won't close properly. Wood has been known to shrink in cold weather and swell in hot weather.
How much does wood shrink in winter?
Wood moves as its moisture content changes. Wood doesn't move much lengthwise, so you don't have to worry a lot about boards getting shorter. But a board can move quite a bit across its width. A board that's 6 inches wide during a humid summer might shrink by 1/32 of an inch in winter.
Why has my wooden door shrunk?
During cold and dry weather, moisture reduction and shrinking of the wood fibres could cause your wooden doors and their frame to shrink, which could result in hairline cracks in wood doors, especially in painted joints and separations in the panels of your doors.
How do I fix a shrunken door?
Use an exterior primer first and prime the front, back, top, sides, and bottom. Then paint with an exterior paint and apply 2 heavy coats. While the door is drying, get some extreme temperature weather stripping and apply it to the door frame.
Why Doors Swell in Winter?
Seen as a problem that only affects older homes, most people don’t ever think why their doors swell in winter. This is understandable since it really isn’t something they have control over. However, knowing why the doors and windows are subject to swelling could help you avoid expensive repairs. In addition, a little knowledge can go a long way when looking for ways to save some money on your heating bills.
Why do people use wood doors?
People generally opt for wooden doors because they are aesthetically pleasing and warmer than metal or fiberglass ones. However, one disadvantage of wooden doors is that they tend to swell in winter and shrink during summer, which eventually causes unevenness at the sides and top/bottom of the door (if not kept well). To avoid this, you can use wood lathe scraps placed on the sides and bottom of the doors to get destroyed due to seasonal changes.
Why do garage doors swell?
The doors in the garage are more likely to have warping problems than other areas simply because they are exposed to winds and weather extremes regularly, which can cause them to swell or shrink drastically from season to season depending upon how warm or cold it is outside.
How to protect against cold drafts?
Add some weather-stripping on top of the doors if you want an extra layer of protection against cold drafts. Keep good quality weather stripping around the track area along with slides. It will help provide an extra barrier against the cold draft and water seepage, too, if there is any leakage from the shower or bathroom, etc.
Why do doors swell?
There are two reasons why this happens: vacuum pressures inside and outside of the house and exterior temperature changes during the year. Depending upon how severe these factors get, doors will swell each time differently. Three main areas see door warpage: garage entries, kitchen entryways, and front or back entrances/exits from the home.
Why do wood floors rot in winter?
Keep away from moisture too as much as possible , such as washing or cooking areas, which usually create moisture to make floorboards damp and other wooden parts of homes like window frames, etc… This is also one of the reasons why houses are affected by wood rot during the winter months.
How to keep a door from swelling?
The warmer it gets, the more it will expand and make your door swell. It might get damaged too when it swells up. If possible, keep at least three feet distance from heaters to prevent your door from swelling in winter.
What causes a door to fade in winter?
Cold and wet winter weather can put a damper on your entry door---and it can even ruin its appearance! Moisture from winter weather can cause your door to fade and lose its vibrant color.
Why won't my door latch in winter?
You might find that the strike plate is misaligned, which is causing a gap between the door and the frame where it won’t latch. If this is the case, move the strike plate up or down to place it in the correct position.
Why does my door not close properly?
When the door latch misses the strike plate, this typically means that the strike plate is misaligned. Even a latch that is off by a fraction of an inch can cause the door to not close properly. For the door to latch properly, the small metal plunger on the side of your door must fit neatly into the plate that’s attached to the frame.
How to fix a door that is stuck on the hinge?
One fix is to try re-drilling holes for bigger screws. Another option is to create a shim which can be placed behind the screws in the hinges . You’ll need to know where there is a bind or where the door pulls from the hinge, which is either the top or the bottom. You’ll then place the shims to even the swing of the door. Ta-da, your door should now stay closed!
Why does my door get stuck?
Changing weather can cause the door or its frame to expand and contract, which causes it to get stuck. This is especially true when you’re dealing with an authentic wood entry door, which is notorious for presenting a variety of issues in terms of maintenance and performance.
Why does my door bind in the corner?
When your door binds in the upper corner of the jamb, it’s a result of the door pulling down at an angle from the top corner. Changing weather can cause the door or its frame to expand and contract, which causes it to get stuck.
Why do old doors peel?
Old doors show their true age the most during the winter months when air infiltration becomes most obvious---think in terms of drafts and overall discomfort in your living space. The door is damaged. For example, winter moisture damage can easily cause old wood doors to peel or even rot.
Why does my wood door expand?
I would say it has to do with humidity, since it is a wooden door. It probably gets too humid during the winter and the wood expands. If it had to do with temperature, it would be the opposite effect (it would expand during the summer when it is hot).
Why does wood expand in winter?
It's actually just that in winters or around that time water doesn't evaporate that fast. So, the cellulose in the wood expands due to the added water content and swells until it doesn't fit the door frame. (1)
What does it mean when a tree expands in moisture?
If you think about it that property probably saved a lot of trees from dying. If wood expands in moisture that means the tree will be taller in just the right conditions. It contracts that means the tree will be shorter in just dry conditions.
Can you plane off a door?
You could plane off the door so it's a little smaller to make it fit in the winter and be a little small in summer. Just observe where it sticks and with your wood plane shave a little off till you like it. Share. Improve this answer.
Why does humidity drop in winter?
This is unusual. In the winter the interior relative humidity typically drops as cold air from outside is heated it becomes very dry. If your doors are wood and expanding they are being exposed to excess moisture. Check your glass on the windows.
Why does my house get moldy in winter?
In winter your house is mostly closed up all the time to keep heat in. If you do not ventilate the moisture from showers, baths, sinks, and dishwashers this will build up and cause wood and other porous materials to swell and possibly cause mold growth .
Why does my house have moisture?
You probably have a buildup of moisture or humidity in your house. This could be due to several things but most often it is from improper ventilation. In winter your house is mostly closed up all the time to keep heat in. If you do not ventilate the moisture from showers, baths, sinks, and dishwashers this will build up and cause wood ...
How to keep out cold outside air?
Proper bath and kitchen ventilation fans with self closing dampers to keep out the cold outside air are a good remedy. Run them regularly during and after water use activities like bathing , shower. Continue Reading. You probably have a buildup of moisture or humidity in your house.
How to stop wood from expanding in cold weather?
But the most practical method that I recommend is to seal the wood airtight by applying polyurethane, epoxy resin sealer 2-3 times above the wooden surface. By doing this you’ll be able to increase the lifetime of furniture pretty much you want.
Why are wooden doors closed in the summer?
When it’s cold outside the humidity level of the atmosphere is low. When the humidity outside is low, the moisture that is trapped inside wood doors will penetrate outside to balance the humidity between the inside and outside of the wooden door. As a result of the penetration of moisture to the outside, the wood will start to shrink. This will happen under normal circumstances.
How Long does it take Wood to Expand?
Wood is hygroscopic matter and it absorbs moisture under several circumstances. According to the humidity of the air, wood tends to absorb moisture and expand. When the wood is denser it takes more time to absorb the moisture, because its stability is higher than less dense wood. Hardwoods that are high in density will take longer for moisture to penetrate through the surface. Softwoods that are low in density absorb moisture quickly because they are having a high porous fiber structure.
Why does softwood crack?
When the level of humidity goes down, less dense wood will release moisture much faster than hardwood. Because of this quick response to the environmental humidity with cold and hot temperature levels , softwood and furniture that are made out of softwood tend to crack easily than hardwood furniture and their durability is also particularly low.
How to stop wood from expanding?
Sealing the wood airproof. Sealing wood can prevent expansion. use polyurethane resin, epoxy resin as the sealer and after applying several coats your wood will airtight and it won’t absorb moisture from outside which causes expansion. by following this method, you’ll be able to stop the expansion but not the movements. I highly advise you not to stop wood movements, because wood is a hygroscopic material, and it needs to balance its humidity level according to the outside environment.
Why does wood crack in cold weather?
The main reason for this type of expansion and contraction of wood with hot and cold temperature levels is because of humidity. During winter the humidity of the atmosphere (76%) is significantly higher than the humidity in summer which is 66%. This humidity change causes wood to shrink or expand. Constant shrinking and expansion of wood with seasons cause the wood to crack.
Is it bad to have furniture in cold weather?
Cold temperatures are not bad for your furniture only if they don’t face constant temperature fluctuations from hot to really cold. If you live in an area which doesn’t have rapid change from extreme cold to extreme hot weather conditions during the period of the year, you no need to much worry about wood furniture.
