Surrey · England
Blindley Heath External Mastic
Our applicators work in Blindley Heath on sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Cracked joints where brick meets render or frames
- Weathered mastic that no longer stretches
- Joints with sealant missing in places
About our external mastic in Blindley Heath
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. If you are dealing with water getting into walls through failed joints and movement joints with cracked, split or missing sealant, we can help.
In a village or hamlet like Blindley Heath, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
You’re covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Where
- Blindley Heath (RH7, RH9)
- Region
- Surrey
- Cover
- One year on every job
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What the job involves on each surface
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. We cut out the old sealant and reseal with a product suited to both surfaces.
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. A primer goes on where the product requires one before the bead.
Also near Blindley Heath
What else we do in Blindley Heath
Can I do it myself?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
External mastic in Blindley Heath: local notes
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Rented homes near Godstone station change hands often, and split movement joints are easy to miss on a rental until damp shows inside. Homes close to Church of St John the Evanglist include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Blindley Heath is about 5 miles north of East Grinstead, in Surrey. Blindley Heath gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 395 towns and villages across Surrey, from the larger towns to small villages. For nearby work, see our Crawley page.
Here we cover the RH7 and RH9 postcode area for external mastic. Local streets include Eastbourne Road, St John's Meadow and Langsmead, all of which we cover. We also cover Whitewood (1 mile south-west), Horne (1 mile south-west), Lingfield Common (2 miles south-east), Lingfield (2 miles south-east) and Newchapel (2 miles south). Larger places within reach include Epsom (13 miles north-west), Horley (5 miles west), Redhill (6 miles north-west), Ewell (14 miles north-west), Reigate (7 miles north-west) and Caterham (6 miles north).
Near you in Blindley Heath
We work in homes and buildings around The Jolly Farmer pub and Lingfield Wildlife Area and the streets around them. Blindley Heath’s nearest station is Godstone station, about 1.5 miles north. Other landmarks nearby include Haxted Watermill Museum (3.6 miles east) and Foetal Alcohol Spectrum Disorders Clinic (4.8 miles north-east). Open spaces near Blindley Heath include Bay Pond and Hedgecourt Lake.
What happens on the day
Most of a good job is in the preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it usually takes anything from a few hours to several days, depending on the building. Somewhere like Blindley Heath needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Clear items away from the joints we’re working on
- For business premises, tell us about site rules or sign-in
- Mention if the joints have been sealed before
Getting a quote
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
Related advice
When it is not the sealant
Sealant is not the answer to every problem, and we’d rather say so up front. Sealant won’t put right:
- Rising or penetrating damp from elsewhere in the wall
- Cracks in the bricks or render themselves, away from the joints
- Movement that’s more than a sealant joint can take
If you’re not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer before booking.
Surfaces we seal
- Façade panels
- Joints between brick and frames
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Leave the joints unpainted unless we’ve said otherwise
- Show decorators and builders where the movement joints are
- Clear growth from the base of walls and joints
- Check external joints each spring
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
Once a joint can’t move, the wall finds another way, often as cracks near the joint. Resealing it early helps prevent that.
Why it’s worth doing now in Blindley Heath
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner so it’s worth doing right. Around Blindley Heath, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or send us an email and we’ll talk you through it.
What you get with us
- Over 20 years’ experience
- Colour agreed with you before we start
- We’re fully insured
- Colour picked to suit the job
See our cost guide and our reviews.
Common questions in Blindley Heath
Can you help a landlord with a rental near Godstone station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Can you do external mastic in Blindley Heath?
Yes. We work across London and the South East, and Blindley Heath is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear quote.
Will the new joint stand out?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render.
Can you reach joints on upper floors?
Each building is different. Tell us the height, the number of joints and what’s below them, and we’ll confirm what access is needed.
Should I point up the gap in my brickwork?
No, not where the gap is a movement joint. Pointing it stops it working and can lead to cracking. We will reseal it with a flexible sealant.
How long does external mastic take?
Most jobs take a few hours for a handful of joints, longer for a whole elevation. We’ll confirm how long when we quote.
Does someone need to be in?
Access is agreed with you when the job is booked. Indoors, that generally means someone at home.
Do you do commercial work?
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.
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.