Surrey · England
External Mastic in Martyr's Green
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Martyr's Green and across Surrey. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Old sealant gone brittle and cracked
- Rigid filler in a joint that should flex
- Sealant that has lost its bond to the brick or render
When it is not the sealant
We will not take on work that will not last, so here’s what sealant cannot put right:
- Cracking across the wall rather than at a joint
- Loose or hollow render, which needs re-rendering
- Rising or penetrating damp from elsewhere in the wall
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly before booking.
Where we work in Martyr's Green
- Copings & trims
- Brickwork movement joints
- Joints between brick and frames
- Concrete & block
- Façade panels
- Render & cladding joints
External mastic in Martyr's Green, done properly
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two where a rigid filler would soon crack. We work on façade panels, concrete & block and render & cladding joints, and the jobs we see most are brick movement joints where the sealant has split and rain getting behind render or cladding at a joint.
Somewhere as small as Martyr's Green, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
All our work comes with a 12-month guarantee, wherever you are in Surrey.
- Place
- Martyr's Green (KT11)
- Wider area
- Surrey
- Cover
- One year on every job
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about external mastic in Martyr's Green
Do you cover smaller places like Martyr's Green?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you work for landlords with property near Effingham Junction station?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme.
How much does external mastic cost in Martyr's Green?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Is it OK to seal over old sealant?
No. The old sealant always comes out first, so the new sealant bonds properly.
What is a movement joint?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
Signs you need external mastic in Martyr's Green
The wrong product in a moving joint is a classic cause. A high-modulus or general-purpose sealant can be too rigid for a busy joint, so it pulls away from the edges.
The most common problems we see are:
- Hard, crazed mastic that has stopped moving
- Sealant pulling away from one side of the joint
- Failed sealant between panels on a façade
- Joints pointed up with cement by mistake
Rented homes near Effingham Junction station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
What to look for in a quote
- What guarantee comes with the work
- Is the old sealant removed completely?
- When the joint can take water or movement
- Who does the work, and how experienced they are
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Keep water from gutters off the wall
- Make sure movement joints are not pointed over
- Check the sealant is paintable before painting near it
- Look over the joints every year, ideally after winter
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage, all bigger jobs than a reseal.
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes anything from a few hours to several days, depending on the building. In a small place like Martyr's Green, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- For business premises, tell us about site rules or sign-in
- Let us know if you’ve seen damp or leaks
Ask for a quote
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work and give you a clear price.
Related advice
Landlords, agents and businesses in Martyr's Green
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Housing providers, facilities teams and property managers book us too in Martyr's Green and across Surrey. We can quote a run of properties together, and we’re fully insured.
Different surfaces, different methods
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it, or one the system allows. Send us any details you have about the façade.
Copings and trims
Copings expand and contract through the day, so the joints need a sealant that stays flexible.
Should I try it myself first?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Walls and rooflines in Martyr's Green
Historic houses like Byfleet Manor (about 2.2 miles north-west) are a reminder that the area around Martyr's Green has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Historic houses such as Byfleet Manor, about 2.2 miles north-west, show how far back building around Martyr's Green goes.
Martyr's Green is about 5 miles south of Weybridge, in Surrey. For external mastic in and around Martyr's Green, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We cover Surrey from our Crawley base. We cover 395 towns and villages across Surrey. There’s also a page for Crawley, roughly 17 miles from Martyr's Green.
Every address in KT11 is within our area for external mastic. Streets in the area include Old Lane and Ockham Lane, all of which we cover. We also cover Hatchford (1 mile north-east), Hatchford End (1 mile north-west), Downside (1 mile north-east), Wisley (2 miles north-west) and Pyrford Green (3 miles north-west). Within a short drive, we also cover Guildford (7 miles south-west), Woking (6 miles west), Camberley (13 miles west), Epsom (8 miles east), Horley (15 miles south-east) and Redhill (13 miles east).
Landmarks near Martyr's Green
Around Martyr's Green, our work takes us to homes and buildings near The Forest and the Highlands and The Black Swan pub, among other places. For rail, the closest station is Effingham Junction station, roughly 1.2 miles south-east. Other landmarks nearby include Send and Ripley History Society Museum (2.4 miles west) and Woking Community Hospital (5.1 miles west). Open spaces near Martyr's Green include Boldermere Lake and Papercourt Marshes.