Hampshire · England
Window & door mastic in East Harting, Hampshire
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in East Harting. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps where the sill meets the wall
- Rushed sealant from a window installation
- Sealant in the wrong colour for the frame
Window mastic in East Harting
The new joint doesn’t have to be white. White, brown, anthracite grey, black and clear sealants are all available, so the bead blends with the window rather than framing it. We work on composite doors, timber windows & doors and uPVC windows, and people most often call us about cracked internal joints between frame and plaster and gaps where the sill meets the wall.
Somewhere as small as East Harting, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
There’s a 12-month guarantee on every job, whatever its size.
- Place
- East Harting (GU31)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What happens on the day
We keep the work tidy and contained to the area we’re working on, so you can get on with your day. The job usually takes a few hours for a handful of frames, longer for a whole house, and we explain the cure time before we leave. Somewhere as small as East Harting, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- Let us know about stairs, lifts or work at height
- For indoor joints, keep the area dry beforehand if you can
- Plan for the work area to be out of bounds to pets and children
Get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you are ready, ring 0345 464 0079 or send us an email.
Related advice
Why act early in East Harting
A quick bead over the top of old mastic looks like an easy fix, but new sealant cannot bond to old, crumbling mastic. It soon lifts and the leak carries on behind it. Proper resealing starts with removing the old joint. Older cottages and farmhouses around East Harting can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
Why East Harting clients choose us
- An ARBOMaster approved applicator
- Quality sealants from Arbo and Everbuild
- 180+ five-star Google reviews
- Full insurance on every job
Read what affects the cost and customer reviews.
Different surfaces, different methods
Patio & French doors
Patio and French doors have the longest joints on most houses. Most leaks start at the bottom corners, so we pay close attention there.
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. We seal onto sound, dry paintwork or timber.
What affects the quote in East Harting
There’s no set price list, because no two jobs are the same. The quote depends on:
- Any mould that needs treating
- Which sealant suits the joint
- The number of rooms or windows
- How easy the joints are to reach
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts.
Helping us quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Pictures of the joints, sent by email
- Whether it’s a home or a business
- If someone has resealed it before
- The address or postcode of the job
Every job is quoted individually, so start by telling us what you need. Just ring 0345 464 0079 or email us with the details, and photos are welcome.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Repaint timber before it’s bare
- Look round the frames every year or so
- Keep drainage slots and sill grooves clear
- Don’t use solvent cleaners on the joint
Silicone can’t generally be painted, so mention any painting plans before any work starts. We can use a paintable sealant where that matters.
Water trapped behind a failed joint can start rot in timber frames and sills. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.
Common questions in East Harting
I let a flat near Petersfield station. Can you help?
Yes. We work for letting agents and landlords as well as householders, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Will you come out to East Harting?
Yes. East Harting is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Will there be a smell?
There can be a smell while the sealant cures. Opening a window helps.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
How long will my window job take?
A few frames take a few hours, while a whole house takes longer. You’ll get a timescale with the quote.
Are you insured?
Yes. Mr Mastic is fully insured.
Which products do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
Can resealing stop a draught around my window?
Often, yes. Air often gets in between the frame and the wall, and sealing the inside and outside joints closes that path.
Places near East Harting
What else we do in East Harting
Landlords, agents and businesses in East Harting
We work for landlords and agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
What we’re called out for in East Harting
A lot of older mastic was never designed to stay flexible. Once it’s rigid, every bit of frame movement pulls at it, and a gap opens along one edge.
Common reasons people contact us are:
- Cracked or shrunken mastic around the frame
- Untidy mastic left by window fitters
- Water coming in at the bottom corners of a door
- Sealant in the wrong colour for the frame
For an older house near a landmark such as The Parish Church of St Mary & St Gabriel, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Before you book anyone
- What insurance they hold
- Whether VAT is included
- How much experience the applicator has
- How the colour is chosen
Window mastic in East Harting: local notes
Historic houses like Uppark (about 1.7 miles south-west) are a reminder that the area around East Harting has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among 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 Petersfield station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. If you look after a building such as Harting CofE Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
East Harting is about 4 miles south-east of Petersfield, in Hampshire. From the centre of East Harting to the outskirts, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Across Hampshire, we cover 683 places, and East Harting is one of them. Our Portsmouth page covers work nearby (15 miles or so).
We work across GU31 for window mastic. That includes homes and businesses on Hollist Lane, East Harting Street and Orchard Close. Close by, we work in South Harting (1 mile west), Nyewood (1 mile north), Elsted (1 mile east), Elsted Marsh (2 miles east) and Dumpford (2 miles north-east). Further out, we also cover Havant (9 miles south-west), Horndean (8 miles south-west), Alton (13 miles north), Waterlooville (10 miles south-west), Petersfield (4 miles north-west) and Purbrook (10 miles south-west).
Near you in East Harting
In East Harting, that means homes and buildings near The Ship Inn, among other places. The closest station to East Harting is Petersfield station, about 4.1 miles north-west. A little further out are Petersfield Community Hospital (4.1 miles north-west) and Bear Museum (3.7 miles north-west). The countryside around East Harting includes Iping and Stedham Commons and Oakham Hill.