West Sussex · England
External & façade joints in Durfold Wood, West Sussex
External mastic for Durfold Wood, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Moss and dirt in joints with no sealant left
- Failed sealant between panels on a façade
- Water getting into walls through failed joints
External mastic in Durfold Wood
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Porous or awkward surfaces are primed where the sealant needs it and we use one wherever it does. Common call-outs are for old sealant gone brittle and cracked and movement joints with cracked, split or missing sealant, on concrete & block, façade panels and render & cladding joints.
Somewhere as small as Durfold Wood, 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.
Whatever the size of the job, it’s backed by our one-year guarantee in Durfold Wood and across West Sussex.
- Location
- Durfold Wood (RH14)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we do, step by step
On the day, we start by going over the job with you, so you know exactly what we’re doing. We protect the surfaces around the joints before any work begins. The work generally takes a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Durfold Wood, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Clear the area around the work
- Tell us about any water getting in
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, and email photos if that’s easy.
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Places near Durfold Wood
What else we do in Durfold Wood
What the job involves on each surface
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. If that is happened, we rake it out and reseal it properly where it can be done safely.
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.
FAQs for Durfold Wood
I let a flat near Witley station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Do you cover smaller places like Durfold Wood?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
Will the old sealant be removed?
Yes, every time. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
What should I tell you?
A short description and the location, with pictures by email if possible. We’ll ask anything else we need to know.
Can you quote for more than one area?
Of course. Combining jobs makes good use of the visit.
Is it OK to fill a movement joint with cement?
No. Cement or mortar can’t stretch. Where a joint has been mortared, it can often be raked out and sealed properly.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
What happens if it’s left?
Water gets in through a failed movement joint and can run behind render or cladding. Dealing with it early keeps the repair to the joint, rather than the wall around it. Where a wall is exposed, as many are in small places like Durfold Wood, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Combining jobs into one visit usually makes better use of the time than several visits. You will get one clear quote for the whole job.
Why choose Mr Mastic in Durfold Wood
- ARBOMaster approved applicator
- A 12-month guarantee on all work
- White, clear, grey or coloured to suit, where the product allows
- Rated 4.9 stars on Google
See our cost guide or customer reviews.
Do you need external mastic in Durfold Wood?
Sometimes a movement joint was filled with mortar or a rigid filler. The joint can’t move, so the wall cracks somewhere else instead.
These are the problems we’re asked about most:
- Hard, crazed mastic that has stopped moving
- Cracked joints where brick meets render or frames
- Leaking joints around cladding and façade panels
- Rain getting behind render or cladding at a joint
For an older house near a landmark such as Holy Trinity Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Before booking anyone
- What product goes in the joint
- How long to leave it before use
- Whether they seal over old material or remove it
- What insurance they hold
DIY sealant or a professional job?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
How to look after the new joints
After the cure time, these simple habits help:
- Deal with leaking gutters that soak the joints below
- Check the sealant is paintable before painting near it
- Never let anyone fill a movement joint with mortar
- Avoid pressure-washing directly into sealant joints
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
Quotes for external mastic in Durfold Wood
We don’t publish a price list, because no two jobs are the same. The quote depends on:
- The type of sealant required
- Whether old sealant or filler has to be cut out
- The number and length of the joints
- Any working-time requirements on site
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Helping us quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Any previous sealing or DIY work
- Whether it’s a home or a business
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that is easy
To get 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 work begins.
Walls and rooflines in Durfold Wood
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Witley station, outside joints that have cracked can let damp into a rental, so check them between lets. Managing a site like Plaistow and Kirdford Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.
Durfold Wood is about 11 miles west of Horsham, in West Sussex. Every kind of property in Durfold Wood can book us for external mastic, old or new, large or small. The work is guaranteed for a year. Durfold Wood is one of 371 places in West Sussex where we work. For nearby work, see our Crawley page.
Postcode districts we cover here for external mastic: RH14. You’ll find streets such as Dunsfold Road and Durfold Wood, and we cover them all. Close by, we work in Plaistow (1 mile south-east), Ifold (2 miles south-east), Alfold Bars (3 miles east), Loxwood (3 miles east) and Alfold (3 miles east). Further out, we also cover Horsham (11 miles east), Storrington (13 miles south-east), Billingshurst (7 miles south-east), Bewbush (15 miles east), Roffey (12 miles east) and Southwater (11 miles east).
Near you in Durfold Wood
The closest station to Durfold Wood is Witley station, about 4.5 miles north-west. Well-known places in the area include Haslemere and District Hospital (5.8 miles west). Green spaces nearby include Shillinglee Lake and Hydon's Ball.