West Sussex · England
Lumley Sand Mastic
Sand mastic in Lumley from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Silicone on a period window that looks wrong
- Mastic round period door frames that has failed
- Cement or filler used on old window joints that has cracked
Landlords, agents and businesses in Lumley
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Sand mastic for homes and businesses in Lumley
We work across Lumley renewing sand mastic on sash windows and doors. Every joint is cleaned out and filled by hand for a neat, traditional finish. Typical jobs include wind and rain getting in round a sash window and patchy fillers round a sash window, on tenement windows, brick reveals and stone surrounds.
Around Lumley, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
All of our work is guaranteed for twelve months.
- Location
- Lumley (PO10)
- Wider area
- West Sussex
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Why deal with it now?
If you are redecorating, renew the mastic first. Paint over cracked mastic won’t stop the gaps and traditional guidance is to leave the new mastic unpainted. In a small place like Lumley, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference.
Why choose Mr Mastic in Lumley
- More than 20 years in sealant work
- Tidy, careful work
- Sanitary silicone with an anti-fungal additive in wet areas
- 180+ five-star Google reviews
See what affects the cost and our reviews.
Towns and villages near Lumley
More services for Lumley
How the job changes by surface
Stone surrounds
We take care not to mark the stone when the old mastic comes out.
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We work on single windows or whole elevations.
What we cannot put right
We will not take on work that won’t last, so these are the limits:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Planning or listed building consent (your local planning authority decides)
- Broken panes
If you’re not sure, just ring 0345 464 0079 or email us and we will give you a straight answer.
Surfaces we seal
- Period & listed homes
- Timber door frames
- Sash and case windows
- Brick reveals
- Tenement windows
- Stone surrounds
Windows and doors in Lumley
Lumley 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’s hard on the mastic around older windows and doors, especially on the side facing the sea. With historic houses such as Warblington Castle (about 1.6 miles west) nearby, there’s older building stock in the area around Lumley as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Homes close to Church of St James include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For site and facilities teams at buildings such as St James Church of England Controlled Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Lumley is about 1 mile east of Emsworth, in West Sussex. If you need sand mastic in Lumley, please ring 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover West Sussex. Our West Sussex coverage runs to 371 places, and Lumley is one of them. Our Portsmouth page covers work nearby (7 miles or so).
Work in PO10 is quoted and booked the same way as anywhere else. Streets in the area include Lumley Road and Northlands Park. Close by, we work in Emsworth (1 mile west), Westbourne (1 mile north), Southbourne (1 mile east), Woodmancote (1 mile north-east) and Denvilles (1 mile west). Within a short drive, we also cover Bognor Regis (12 miles east), Chichester (7 miles east), Selsey (10 miles south-east), Portfield (7 miles east), Yapton (14 miles east) and East Wittering (7 miles south-east).
Around Lumley
Locally, jobs take us to homes and businesses close to Eames Farm, Bourne Community College and Lord Raglan P.H. Pub and the streets around them. There’s a railway station in Lumley itself: Emsworth station. A little further out are Warblington Castle (1.6 miles west) and Emsworth Museum (within half a mile south-west). Not far away are Stoke Down and Brook Meadow (Emsworth).
When to call us in Lumley
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint.
The problems people generally mention when they call are:
- Failed mastic on an exposed elevation
- Gaps between timber frames and stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
- Draughty sash windows at the surround
Letting a property close to Emsworth station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- Which colour the sealant will be
- Whether they seal over old material or remove it
- What the cure time is
- How the surfaces are prepared before sealing
What we do, step by step
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it usually takes a few hours for a single window, longer for several. In a small place like Lumley, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Tell us about any water getting in
- Tell us if parking is tricky
- Clear items away from the joints we are working on
Get a quote
We don’t publish a price list. Instead, we send you a clear quote for your job. To arrange one, phone 0345 464 0079 or send us an email.
Advice
Quotes for sand mastic in Lumley
There’s no set price list, because no two jobs are the same. The quote depends on:
- Whether the work is at height
- How much there is to do
- How many areas need sealing
- Any mould that needs treating
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Access, such as stairs, a lift or height
- Whether it’s a home or a business
- Roughly how big the job is
- Where the property is
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work and give you a clear price.
Common questions in Lumley
Does living near the coast affect sand mastic in Lumley?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Is Lumley within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Is it possible to paint over sand mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Do I need permission for sand mastic on a listed building?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like, but they decide.
Can you quote for more than one area?
Yes, we can. More than one area can be quoted together.
What does sand mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
Which is right for my windows, sand mastic or modern sealant?
We’ll talk it through with you. Period homes often look best with sand mastic and newer frames suit modern sealant.
What is sand mastic?
Sand plus a binder based on linseed oil. It’s built up in the joint by hand and shaped to suit the surround.