Portsmouth · England
Sand mastic for sash & case windows in Drayton, Portsmouth
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Drayton, backed by a 12-month guarantee. Call for a quick quote.
- Crumbling sand mastic round a window
- A silicone bead on a sash window that spoils the look
- Patchy fillers round a sash window
Sand mastic in Drayton, done properly
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, the joint is prepared and new mastic is shaped by hand. If you are dealing with mastic that needs renewing before redecorating and open joints round the window box, we can help.
In smaller places like Drayton, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. The right sealant depends on the frame and on what it sits in.
Whatever the size of the job, you get the same 12-month guarantee.
- Location
- Drayton (PO6)
- Region
- Portsmouth
- Cover
- One year on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Leave it or put it right?
Filling over old, loose mastic does not last. We remove the loose material first so the new mastic stays put. Around Drayton, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
Leaving a failed joint usually makes the job bigger, not smaller. If you’re not sure whether it needs doing, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Why Drayton customers choose us
- We are fully insured
- Anti-fungal silicone where joints get wet
- More than 20 years in sealant work
- A 12-month guarantee on all work
Take a look at our cost guide and our reviews.
Drayton homes and the weather
Drayton is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as Springfield School, the mastic around its windows and doors needs looking after like any other building’s. Letting a property close to Cosham station? Then any sash windows need sound mastic to keep draughts and rain out.
Drayton is about 2 miles south of Purbrook, in Portsmouth. Wherever you are in the PO6 postcode area, we cover sand mastic for homes and businesses. 19 places in Portsmouth are on our list, from the larger towns to small villages.
We work across the PO6 postcode area for sand mastic. If you need sand mastic at a property on Galt Road, Hirst Road and Court Lane or anywhere close by, we can help. Close by, we work in Farlington (1 mile east), Widley (1 mile north), Cosham (1 mile west), Wymering (1 mile west) and Hilsea (2 miles south-west). Further out, we also cover Portsmouth (3 miles south-west), Southsea (4 miles south), Milton (4 miles south), Landport (3 miles south-west), Baffins (3 miles south) and Rudmore (3 miles south-west).
Local landmarks in Drayton
Locally, jobs take us to homes and businesses close to Solent Junior School and New Inn and the streets around them. For rail, the closest station is Cosham station, about 1 mile west. Other landmarks nearby include Portchester Castle (3.1 miles west) and World War I Remembrance Centre (1 mile south). The countryside around Drayton includes Portsdown Hill and Southmoor Nature Reserve.
What else we do in Drayton
The process
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours per window, depending on the condition of the joints. For a job in Drayton, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Preparing for the visit
- Tell us if parking is tricky
- On commercial sites, let us know about site rules
- Tell us about any previous sealing or DIY attempts
Getting a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Advice
Drayton: your questions answered
Does living near the coast affect sand mastic in Drayton?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Is Drayton within the area you cover?
Yes, Drayton is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
What is sand mastic?
Sand plus a binder based on linseed oil. It’s applied by hand and shaped to suit the surround.
How much does sand mastic cost in Drayton?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Do I need permission for sand mastic on a listed building?
Speak to your local planning authority before work starts. Like-for-like sand mastic is often the preferred finish, but they decide.
Can you quote for more than one area?
Yes, and it often makes sense. Doing several areas at once is normally more efficient.
Will the old sealant be removed?
Yes, every time. New sealant will not bond properly to old, so the joint is cleaned back first.
I’m a tenant. Can you help?
We are happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.
Common problems we fix in Drayton
Paint, silicone or cement used over old mastic causes problems. They do not suit the joint and we normally remove them.
It’s worth asking for a quote if you see:
- Mastic round period door frames that has failed
- Silicone on a period window that looks wrong
- Mastic that needs renewing before redecorating
- Draughty sash windows at the surround
Homes close to Drayton Methodist Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Questions to ask before booking
- How long to leave it before use
- How the colour is chosen
- Is the old sealant removed completely?
- Are they insured?
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
When it isn’t the sealant
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Putty and glazing repairs
- Whether work needs listed building consent
- Decayed frames that need repair
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Tenement windows
- Timber door frames
- Period & listed homes
- Brick reveals
- Stone surrounds
- Sash and case windows
Different surfaces, different methods
Stone surrounds
Old stone surrounds are often uneven, so the gap is not the same all the way round. Sand mastic is shaped by hand to suit.
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we will confirm access.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Renew mastic before redecorating the windows
- Go gently near the mastic when preparing windows
- Avoid patching sand mastic with silicone
- Ask us before painting near the mastic
Leave the new mastic alone while it firms up. It skins over quickly but needs longer to fully harden.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.