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Door Gap Sealing, the commonest fix for gap under door

Aluminium, uPVC and wooden doors · Bengaluru and Delhi NCR

Gap Under Door? Causes & Repair Cost

Most gaps under a door were left there on purpose, and a seal can close them.

₹1,080/ door starting price₹1,20010% off

The starting price for Door Gap Sealing, the commonest fix. One fixed price per door, supplied and fitted.

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Gap Under Door

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Also searched as
  • gap under the door
  • door bottom gap

The short answer

Most doors are hung with a gap underneath, so they clear the floor as they swing. The usual fix is a seal fitted to the bottom of the door. If the gap is uneven, the door has usually sagged and must be set square first. A very tall gap also needs a low strip fixed across the doorway.

Why it happens

Usually one of these 4 things, commonest first. Each one says how to tell, and what we do about it.

  1. The door was hung with a gap, and nothing seals it

    How to tell
    The gap is even from one side of the door to the other. At night you see a line of light under the door. Dust, insects or smells come through, or the AC room will not stay cool.
    What we do
    We fit a door sweep, a rubber strip on the bottom edge that lightly touches the floor. Over a polished or uneven floor, we fit a drop seal instead. A drop seal lowers onto the floor only when the door shuts.
    Door Gap SealingFrom ₹1,080 / doorSee this fix
  2. The gap is too tall for a seal alone

    How to tell
    You can see well into the next room under the closed door. This usually happens when the door was cut too short at some point.
    What we do
    We fix a threshold, a low aluminium strip, across the doorway, and the door seal closes onto it. Adding wood to the bottom of the door is carpentry, which we do not do.
    Door Gap SealingFrom ₹1,080 / doorSee this fix
  3. The door has sagged, so the gap is uneven

    How to tell
    The gap is wide at the hinge end and closes up at the handle end. That corner may brush the floor. A second gap often shows along the top of the door.
    What we do
    On aluminium and uPVC doors, we set the door square before any seal goes on. A seal on a sagging door drags at one end and leaves a gap at the other. Once the door hangs level, a seal can close the gap evenly.
    Door Stuck RepairFrom ₹1,710See this fix
  4. A wooden door has dropped on loose hinges

    How to tell
    The latch is the sloped bolt that clicks into the frame. It now needs a lift or a hard push to catch. The gap under the door has closed at one end and grown at the other.
    What we do
    We reset the hinges and move the strike plate, the metal plate the latch clicks into. Then the gap can be sealed properly. If the wood has shrunk, split or rotted, a carpenter has to deal with that first.
    Wooden Door RepairFrom ₹1,710See this fix

What you can check first

These checks are safe to do yourself. A photo or a short video of what you find helps us come prepared.

  • Stand on the dark side of a closed door and look for light along the bottom and sides.
  • See whether the gap is the same height from one end of the door to the other.
  • Check whether the door already brushes the floor anywhere as it swings.
  • Notice what comes through the gap, such as dust, insects, noise or cold air.
  • Note what the floor under the door is made of, such as stone, tile or wood.

What the repair costs

Every fix on this page, with its starting price before GST. We find which one you need, and you get a fixed price before any work starts.

FixStarting priceHow it is pricedLink
Door Gap Sealing₹1,080/ door₹1,20010% offOne fixed price per door, supplied and fitted.See this fix
Door Stuck Repair₹1,710₹1,90010% offOne visit covers travel and the work to fix the fault. Any parts are priced on their own line.See this fix
Wooden Door Repair₹1,710₹1,90010% offOne visit covers travel and the work to fix the fault. Any parts are priced on their own line.See this fix

Not sure which one it is? Send a photo or a short video. We will tell you what it looks like, usually within minutes, before anyone comes out.

Common questions

Why is there a gap under my door when it is fairly new?

Doors are hung with a gap on purpose, so they clear uneven floors as they swing. The gap is not a fault by itself. It only needs a seal when dust, insects, noise or cold air come through it.

Can I fill the gap under my door with a foam strip from a shop?

You can, for a short time. Stick-on foam wears where the door rubs over it, and it can peel off. A fitted sweep or drop seal is fixed to the door and set to the floor. It is made for the job and does not make the door hard to open.

Will a seal under the door catch on a doormat or rug?

A fixed sweep can catch on a thick mat or rug. A drop seal lifts off the floor as the door opens, so the seal itself does not drag. The door still needs room to clear the mat. Tell us about any rug near the door, and we pick the seal to suit.

Does sealing under one door make the whole room quieter?

It helps, but the gaps at the sides and top of the door matter too. Sound passes through any gap around a door. We can fit slim seals along the frame as well. The door then closes onto soft rubber on every side.

Related problems

Other problems with the same kind of door, window or fitting, and where to go next.

Get it fixed at your place

We come to you anywhere in Bengaluru and Delhi NCR. We find the cause, and give you a fixed price before any work starts.

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  • Genuine branded fittings
  • We buy authentic materials from reputable, established suppliers.
  • We check the quality before we leave. Most jobs are done in 3 to 4 days.
  • No hidden fees. GST is shown as its own line on the quote.
  • Your details stay protected and confidential on a secure connection.
  • You get dedicated support after fitting, from the same team every time. They are dependable.
  • Easy and transparent from the first message. We work customer-first, so the job stays hassle-free.
Gap Under Door

Add a photo of the problem

Optional, but it helps us bring the right part.

Free to book. No payment now.

Gap Under Door

Add a photo of the problem

Optional, but it helps us bring the right part.

Free to book. No payment now.

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