Hampshire · England
Window Mastic in Otterbourne
We cover Otterbourne for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Draughts coming in around windows and doors
- Cracked internal joints between frame and plaster
- Rain getting in at the frame or under the sill
Window mastic for homes and businesses in Otterbourne
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. Typical jobs include damp patches on the reveal after heavy rain and draughts coming in around windows and doors, across composite doors, patio & French doors and uPVC windows.
Outdoor sealant needs dry, clean surfaces, so work on frames around Otterbourne is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
All our work comes with a 12-month guarantee.
- Where
- Otterbourne (SO21)
- Region
- Hampshire
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about window mastic in Otterbourne
Is Otterbourne within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Otterbourne in your area for window mastic?
Yes. We work across London and the South East, and Otterbourne is part of that. Just call 0345 464 0079 or email us with a few details of the job.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit.
Can tenants book the work?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Do you work for hotels and businesses?
Yes. We have worked for hotels, offices and other businesses.
Is it messy?
We keep the work tidy. Nearby surfaces are protected, and we clear up when we are done.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
What sealant do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
The process
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. It usually takes a few hours for a few frames, or a day or more for a whole house. In a small place like Otterbourne, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Before we arrive
- Mention any sign-in or site rules at work premises
- Try not to wet indoor joints just before the visit
- Let us know about parking restrictions
How to get a quote
Every job is quoted individually, so the first step is telling us about yours. Simply ring 0345 464 0079 or drop us an email and describe the job and send pictures if you have them.
Related advice
Why it’s worth doing now in Otterbourne
Resealing frames is a short job: the visit takes a morning for a couple of windows and a door. Leave it until water is coming in and you may need plastering and decorating as well. Where a wall is exposed, as many are in small places like Otterbourne, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts.
Why book with us
- Approved under the ARBOMaster scheme
- Fully insured
- Colour agreed with you before any work starts
- Sealant colour chosen to suit
Take a look at how sealant jobs are priced and our reviews.
What window mastic looks like in Otterbourne
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you look after a building such as Otterbourne Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s. For landlords with property near Shawford station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Homes close to Church of St Matthew include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Otterbourne is about 3 miles north-east of Chandler's Ford, in Hampshire. We carry out window mastic for homeowners, landlords and businesses in Otterbourne, as part of our work across Hampshire. Otterbourne is one of 683 towns and villages in Hampshire we cover for window mastic. There’s also a page for Southampton, roughly 7 miles from Otterbourne.
All of SO21 is covered for window mastic, from the main roads to the quietest streets. Streets in the area include Oakwood Avenue, Meadowcroft Close and Brooklyn Close. If you’re just outside Otterbourne, we cover South Down (1 mile north-east), Compton (1 mile north), Shawford (1 mile north-east), Twyford (1 mile north-east) and Ladwell (2 miles west). Larger places within reach include Winchester (4 miles north), Eastleigh (3 miles south), Fareham (13 miles south-east), Andover (15 miles north-west), Totton (9 miles south-west) and Chandler's Ford (3 miles south-west).
Near you in Otterbourne
Locally, jobs take us to homes and businesses close to Thornden School, The White Horse Public House and Thornden School and the streets around them. The nearest railway station is Shawford station, roughly 1.1 miles north-east. Other landmarks nearby include Eastleigh Museum (2.9 miles south) and Wolvesey Castle (3.8 miles north). Open spaces near Otterbourne include Twyford Down and Shawford Down.
Aftercare tips
After the cure time, these simple habits help:
- Wipe condensation off the frames
- Avoid harsh chemicals near the mastic
- Make sure the drainage slots are not blocked
- Paint up to the joint, not over it
On timber frames, keep the paintwork in good order, since wood that gets wet swells and shrinks more. Keep paint off the silicone itself.
Draughts get worse, not better. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. A new joint closes it up.
Also near Otterbourne
Other services in Otterbourne
For landlords and businesses
If you manage several properties in or around Otterbourne, several properties can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
We work for landlords and agents as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
What we cannot put right
New sealant cannot fix everything, and we’d rather say so up front. It won’t solve:
- Condensation trapped between the panes
- Damp coming through the wall itself rather than the frame joint
- A door that needs adjusting, rehanging or new seals
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think.
Joints and surfaces we work on
- Window sills
- Composite doors
- Aluminium frames
- uPVC windows
- Patio & French doors
- Timber windows & doors
What the job involves on each surface
Patio & French doors
Patio and French doors have the longest joints on most houses. Most leaks start at the bottom corners, so they get particular care.
Timber windows & doors
Where timber has rotted at the joint, it needs repairing first. If we find rot, we will tell you before going ahead, as that’s a job for a joiner.
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.