Hampshire · England
Dumpford Window Mastic
Specialist window mastic for Dumpford: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Gaps between the frame and the inside reveal
- A bead that does not match the frame
- Black, perished sealant on frames
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Window mastic for homes and businesses in Dumpford
Whether it’s one leaking patio door or every frame on the house, the work is priced before anything is done. Just phone 0345 464 0079 or email us and tell us how many frames there are and how they’re reached. Common call-outs are for draughts coming in around windows and doors and gaps left after new windows were fitted, across window sills, timber windows & doors and patio & French doors.
In a village or hamlet like Dumpford, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Where
- Dumpford (GU31)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a morning for a couple of windows and a door. Somewhere as small as Dumpford, access is often the only tricky part. 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.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Before we arrive
- Keep children and pets away from the work area
- Mention any parking rules near the property
- Let us know about stairs, lifts or work at height
Get a quote
Asking for a quote is easy: let us know what needs doing and where, and roughly how big it is. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Advice
Nearby places to Dumpford
More services for Dumpford
How the job changes by surface
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. We prepare and reseal every joint, backing the deep ones.
Window sills
Stone and concrete sills have their own joints, including the one between the sill and the frame above. Those are sealed with a product suited to stone or concrete.
Dumpford: your questions answered
Will you come out to Dumpford?
Yes. Dumpford is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is Dumpford in your area for window mastic?
Yes, Dumpford is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Can tenants book the work?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Can new window sealant be painted?
Silicone generally will not take paint. If you plan to paint, tell us first and we can use a paintable sealant where it suits the joint.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you.
Will new mastic stop draughts?
Yes, if the air is getting in around the frame. If it’s coming through the window seals, we’ll tell you.
Why it’s worth doing now in Dumpford
Getting a straight, even bead on an outside frame takes practice, especially upstairs. We cut out properly, back deep gaps and tool every joint neatly, using a product chosen for the frame and wall. Around Dumpford, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Doing several joints on one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why Dumpford customers choose us
- We’re fully insured
- Colour agreed with you before any work starts
- Any old sealant cut out fully, not covered over
- Anti-fungal sanitary silicone in wet areas
Read our cost guide and our reviews.
What affects the quote in Dumpford
The quote reflects the job in front of us. We take into account:
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
- Which sealant suits the joint
- Whether the work is at height
What you pay reflects the work, not guesswork. That is why we ask a few questions first and agree the price before starting.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- What’s wrong with the joints now
- If someone has resealed it before
- How we’d reach the joints
- If it’s domestic, commercial or a hotel
Every job is quoted individually, so start by telling us what you need. Just call 0345 464 0079 or email us with the details and send pictures if you have them.
Frames and glazing around Dumpford
With historic houses such as Cowdray House (about 3.8 miles east) nearby, there’s older building stock in the area around Dumpford as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to Liss station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. In the older streets around St George's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Dumpford is about 5 miles east of Petersfield, in Hampshire. Wherever you are in the GU31 postcode area, we cover window mastic for homes and businesses. Our Hampshire coverage runs to 683 places, and Dumpford is one of them. You can also see our page for Portsmouth, roughly 17 miles from Dumpford.
Every address in GU31 is covered for window mastic. Local streets include Terwick Lane, Mill Lane and Trotton Road, all of which we cover. We also cover the places around Dumpford: Trotton (1 mile north-east), Elsted Marsh (1 mile south), Ingrams Green (1 mile south-east), Elsted (2 miles south-west) and Nyewood (2 miles west). We also work in nearby towns such as Havant (11 miles south-west), Horndean (10 miles south-west), Alton (13 miles north-west), Waterlooville (12 miles south-west), Petersfield (5 miles west) and Purbrook (13 miles south-west).
Local landmarks in Dumpford
Typical jobs here are in homes near The Keeper's Arms Public House, among other places. Dumpford’s nearest station is Liss station, about 4.9 miles north-west. Other landmarks nearby include Midhurst Museum (3.5 miles east) and Midhurst Community Hospital (3.6 miles east). Not far away are Iping and Stedham Commons and Wheeler's Down.
How to look after the new joints
After the cure time, these simple habits help:
- Keep paint and stain on wooden frames in good order
- Keep drainage slots and sill grooves clear
- Walk round the house once a year and look at the joints
- Don’t aim a pressure washer at the joints
Check the drainage slots in the frames aren’t blocked, so water can run away instead of sitting against the joint.
Water trapped behind a failed joint can start rot in timber frames and sills. Rotten timber needs a joiner, not a sealant, so it pays to reseal before that happens.