Step 1 of 4
Measure
A digital monitor shows the humidity in each room, so you know where the problem starts.
Wipe it once. Keep it dry.
The condensation, damp and mould kit for UK homes. Measure the moisture, pull it out of the air, and wake up to clear windows.
Shop the Damp Defence KitSource: Uswitch / Opinium survey of 4,000 UK residents, December 2025.
78
% relative humidity
Mould loves damp air
When indoor humidity stays above about 70%, mould has the moisture it needs to settle on cold walls and window frames.
Pull the water out
Absorbers draw moisture from the air around the clock. The window vac clears what has already collected on the glass.
Hold the healthy range
Between 40% and 60% is the comfortable range for most homes. The monitor tells you the moment a room drifts out of it.
Four steps to a drier home
Everything in the kit has one job. Together they stop condensation coming back.
Step 2 of 4
Capture
Refillable absorbers pull moisture from the air with no electricity and no noise.
Step 3 of 4
Clear
A cordless window vac lifts the morning condensation in seconds, before it soaks into sills and seals.
Step 4 of 4
Prevent
A simple routine card shows when to air rooms and when to swap refills, so damp never builds back up.
Damp Defence Kit – Window Condensation Control
£64.00
Everything one home needs to get on top of condensation this winter, in one box.
- Digital humidity monitor
- 4 refillable moisture absorbers
- Cordless window condensation vac
- The beat-the-damp routine card
Free UK delivery over £5030-day returnsSecure checkout
Pick your size
One damp room or the whole house. Every set costs less than buying the parts separately.
For one damp room
Bedroom Starter
£34.00
Worth £56 bought separately
- 1 digital humidity monitor
- 2 refillable moisture absorbers
- 4 absorber refills
- 2 window condensation strips
For most homes
Damp Defence Kit
£64.00
Worth £86 bought separately
- Cordless window condensation vac
- 1 digital humidity monitor
- 4 refillable moisture absorbers
- The beat-the-damp routine card
For 3–4 bedroom homes
Whole Home
£99.00
Worth £161 bought separately
- Cordless window condensation vac
- 3 digital humidity monitors
- 6 refillable moisture absorbers
- 8 absorber refills
- 6 window condensation strips
Shop by problem
Every damp home is damp in its own way. Find yours.
You can't fix what you can't see
Find the room that's too damp
A small screen that shows each room's humidity. Above 70% and mould has what it needs. Between 40 and 60% and you're fine.
Windows streaming every morning
Clear the glass in seconds
Draw it down the window and the water goes into a tank, not onto the sill. Works on mirrors and tiles too.
The room that always smells damp
Pull water out of the air, silently
No plug, no noise, no running cost. It sits in the corner and fills with water you didn't know was in the air.
A bathroom that never dries out
A dehumidifier that fits on a shelf
For small rooms where absorbers can't keep up. Switches itself off when the tank is full.
Puddles on the windowsill
Catch the drip before it does damage
Self-adhesive strips along the bottom of the glass soak up the overnight run-off that rots sills and blackens seals.
Musty clothes and mildew spots
Keep the wardrobe fresh
Hang one between your clothes. It quietly collects the damp that builds up against cold outside walls.
A misted windscreen at 7am
Clearer windows before you set off
Leave it on the dashboard overnight. When it's full, dry it in the microwave and use it again.
Single glazing that drips all winter
Warm up cold glass for a few pounds
Clear film over the frame traps still air, so the glass stays warmer and less water forms. Peels off in spring.
Tea towels soaked by 8am
Wipe dry, no streaks
Thick microfibre that holds far more water than a tea towel. Washable, four to a pack.
A flat you can't keep checking on
Damp alerts on your phone
Live humidity and history in a free app, with an alert when a room crosses your limit. Ideal for rentals and second homes.
Where condensation hides
Bedrooms with the door shut overnight. Single-glazed sash windows. Cars on the drive. Wherever warm air meets a cold surface, water collects.
Moisture Absorber Refill Pack
£16.00
Refills run out. Your protection shouldn't. Keep a pack in the cupboard and swap one in when an absorber fills up.
- Swap a refill in seconds, no tools
- 4 or 8 refills per pack
- Fits every DryWell moisture absorber
Free UK delivery over £5030-day returnsSecure checkout
Better than a towel on the sill
How the kit compares with the usual winter fixes.
| Feature | DryWell kit | Towels and tea towels | Mould spray only |
|---|---|---|---|
| Shows you the humidity in each room | Yes | No | No |
| Removes water from the air | Yes | No | No |
| Clears condensation from windows | Yes | Yes | No |
| Works without electricity | Yes | Yes | Yes |
| Tackles the cause, not just the stain | Yes | No | No |
Digital Humidity Monitor
£9.00
Bedroom Damp Starter Bundle
£34.00
Whole Home Damp Bundle
£99.00
Window Insulation Film Kit
£12.00
Questions
Anything else, email us and a real person will reply within one working day.
Condensation is water from the air settling on cold surfaces like windows and outside walls. It is the most common cause of mould in UK homes. Rising or penetrating damp comes from the building itself, usually from leaks or a failed damp course, and needs a surveyor or builder. The kit is designed for condensation.
It depends on the room and the weather. In a damp bedroom in winter expect a few weeks per refill. Add a refill pack to your order so you never run out.
For most single rooms and small flats the kit is enough. If your monitor stays above 65% even with absorbers working and regular airing, an electric dehumidifier will help.
Most orders arrive within 5–10 working days. You get a tracking link by email as soon as your order ships. Delivery is free on UK orders over £50.
Yes, nothing needs fitting. If mould keeps coming back even after you control condensation, tell your landlord in writing. Landlords must deal with serious damp and mould.
Yes. If you change your mind, you can return unused items within 30 days of delivery for a full refund. Email us first and we will send you the returns address.