Hampshire · England
Window & door mastic in Locks Heath, Hampshire
Professional window mastic in and around Locks Heath, with every bit of old sealant taken out first.
- Hard, cracked sealant around windows
- Cold air getting in at the frame edge
- Rushed sealant from a window installation
What the job involves on each surface
Patio & French doors
Door frames take knocks and movement every time the doors are used. The sealant must cope with it, where a rigid one would crack.
uPVC windows
uPVC expands and contracts noticeably with temperature, so the joint needs a low-modulus sealant that stays flexible. White is the usual colour, with brown, anthracite grey and black for coloured frames.
Window mastic for homes and businesses in Locks Heath
A cold draught around a closed window often comes from the frame edge. Resealing that joint can make a room feel noticeably less draughty. Where the air is getting in through the window itself, we will say so. We are often asked to deal with mastic that’s falling out in pieces and sealant in the wrong colour for the frame, on uPVC windows, window sills and patio & French doors.
In a smaller place like Locks Heath, some walls face open ground and catch the full force of the weather. The mastic around frames on those walls tends to age faster.
Our work is backed for twelve months, in Locks Heath and everywhere else we cover.
- Location
- Locks Heath (SO31, PO14, PO15)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Towns and villages near Locks Heath
Also in Locks Heath
Locks Heath homes and the weather
Locks Heath is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around window and door frames, especially on the side facing the sea. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as Park Gate Primary School, larger buildings have plenty of frames, and the mastic around each one ages. For landlords with property near Swanwick station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Locks Heath is about 3 miles west of Fareham, in Hampshire. Whether you are in the middle of Locks Heath or further out, we cover window mastic for every kind of property, from flats and houses to offices and hotels. 683 places in Hampshire are on our list, from the larger towns to small villages. You can also see our page for Southampton, roughly 7 miles from Locks Heath.
Postcode districts we cover here for window mastic: SO31, PO14 and PO15. Whether your property is on Church Road, Lower Church Road and Laxton Close or anywhere close by, we can help. If you’re just outside Locks Heath, we cover Titchfield Common (1 mile south-east), Park Gate (1 mile north), Warsash (1 mile south-west), Sarisbury (1 mile north-west) and Segensworth (1 mile north-east). Within a short drive, we also cover Winchester (14 miles north), Gosport (6 miles south-east), Havant (12 miles east), Eastleigh (8 miles north-west), Fareham (3 miles east) and Horndean (12 miles east).
Landmarks near Locks Heath
Around Locks Heath, our work takes us to homes and buildings near Brookfield Community School and Language College and Jolly Farmer Public House, among other places. The closest station to Locks Heath is Swanwick station, roughly 0.9 miles north of the centre. Nearby you’ll also find St Andrew's Castle (2.2 miles west) and Carron Row Farm Museum (1.6 miles east). Green spaces nearby include Holly Hill Woodland Park.
Your questions about window mastic in Locks Heath
Can you help a landlord with a rental near Swanwick station?
Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.
Does the coastal weather in Locks Heath affect outside sealant?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. Walls facing the sea are normally the first to need attention.
Do you work in Locks Heath?
Yes. We work in Locks Heath and the rest of Hampshire. For a quote, ring 0345 464 0079 or send us an email.
Is it OK to seal over old sealant?
No, it will not last. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Is the work guaranteed?
Yes. Every job comes with our 12-month guarantee, and we are ARBOMaster approved applicators.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Can you get sealant to suit coloured frames?
Yes. We can use white, brown, anthracite grey, black or clear, so the joint suits the frame.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before resealing.
What we are called out for in Locks Heath
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.
People normally contact us when they notice something like this:
- Draughts coming in around windows and doors
- Gaps between the frame and the inside reveal
- Sealant in the wrong colour for the frame
- Gaps where the sill meets the wall
Homes close to St John include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Questions to ask before booking
- When the joint can take water or movement
- What insurance they hold
- How long the guarantee is
- How the surfaces are prepared before sealing
DIY versus a professional finish
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
What sealant work cannot fix
Sealant isn’t the answer to every problem, and we will tell you before work begins. Sealant will not put right:
- Draughts through the window seals rather than the frame
- Condensation trapped between the panes
- Damp problems in the wall away from the window
If in doubt, call 0345 464 0079 or email us and we will say what we think before booking.
Joints and surfaces we work on
- Patio & French doors
- Window sills
- Timber windows & doors
- Composite doors
- Aluminium frames
- uPVC windows
Quotes for window mastic in Locks Heath
We quote each job individually. This is what makes a difference:
- Working hours on commercial sites
- Which sealant suits the joint
- The old material and how stubborn it is
- Whether the work is at height
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we will go through it with you.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Where the property is
- Access, such as stairs, a lift or height
- A few photos by email, if you can
- If it’s domestic, commercial or a hotel
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or email us and describe the job and send pictures if you have them.
The process
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take anything from an hour or two to a full day, depending on how many frames there are. Parking around Locks Heath is usually easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- 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.
- Every joint is tooled smooth and checked before we leave.
Preparing for the visit
- Mention any tricky access
- Tell us about any previous sealing or DIY attempts
- Keep pets and children clear of the area while we work
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. When it suits you, ring 0345 464 0079 or send us an email.
Advice
For landlords and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.