Surrey · England
External Mastic in New Haw
We cover New Haw for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Water getting into walls through failed joints
- Movement joints with cracked, split or missing sealant
- Panel joints letting water in
External mastic in New Haw, done properly
On houses, flats and commercial buildings across New Haw, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. We work on façade panels, concrete & block and joints between brick and frames, and common reasons people get in touch are gaps where render, brick and frames meet and moss and dirt in joints with no sealant left.
Around New Haw, garages, outbuildings and extensions all add to the joints on the outside of a home. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Location
- New Haw (KT15)
- Region
- Surrey
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
We also work for property managers and facilities teams in New Haw and across Surrey. We can quote a run of properties together, and we’re fully insured for the work.
Do you need external mastic in New Haw?
Some movement joints have been pointed up with mortar by mistake. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
These are the problems we’re asked about most:
- Moss and dirt in joints with no sealant left
- Gaps where render, brick and frames meet
- Leaking joints around cladding and façade panels
- Old sealant gone brittle and cracked
Rented homes near Byfleet & New Haw 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
- How much experience the applicator has
- Are they insured?
- How long the guarantee is
- Which colour the sealant will be
Looking after it afterwards
Looking after new joints is easy:
- Wash walls gently around the sealant
- Check the sealant is paintable before painting near it
- Point out the joints to other trades
- Fix overflowing gutters above sealed joints
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges over time.
Once a joint can’t move, the wall finds another way, often as cracks near the joint. Resealing it early helps prevent that.
Different surfaces, different methods
Render joints
Render is weaker at the surface than brick, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. That movement goes into the joint, so the sealant in it must stay soft and stretchy.
Why deal with it now?
An open joint keeps letting water into the wall with every downpour. In cold weather, frost can damage wet brick and render, so the damage spreads beyond the joint. In an older home around New Haw, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
What you get with us
- We leave the area clean and tidy
- A choice of colours where the product allows
- Experience in homes, commercial sites and hotels
- 180+ five-star Google reviews
What affects the cost of external mastic
We do not publish a price list, because jobs vary so much. What we look at:
- Whether there’s mould to deal with
- The number of rooms or windows
- Any working-time requirements on site
- The type of sealant required
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and send you a clear quote before we start.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- The problem you’ve noticed
- Any access issues, like height or stairs
- If it’s domestic, commercial or a hotel
- Any previous sealing or DIY work
We quote each job on its own. Just phone 0345 464 0079 or email us with the details.
Your questions about external mastic in New Haw
Do you cover smaller places like New Haw?
Yes, New Haw is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I let a flat near Byfleet & New Haw station. Can you help?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Do you work at height?
Each building is different. Send us photos and a rough idea of the height, and we will confirm what access is needed.
How long will you be here?
Most jobs take a few hours to a few days, depending on the length of joint and the access. Your quote will say how long we expect yours to take.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few photos.
Is the work guaranteed?
Yes. Every job comes with a 12-month guarantee.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you when we finish.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
What else we do in New Haw
Walls and rooflines in New Haw
With historic houses such as Byfleet Manor (about 1.9 miles south-east) nearby, there’s older building stock in the area around New Haw as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Homes close to All Saints Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant. For site and facilities teams at buildings such as The Grange Community Infant School, its movement joints, gutters and trims need looking after like any other building’s.
New Haw is about 2 miles south-west of Weybridge, in Surrey. Our applicators cover external mastic for householders, landlords and businesses in New Haw. Our area takes in 395 places across Surrey, large and small. There’s also a page for London, roughly 20 miles from New Haw.
Our applicators cover all of KT15 for external mastic. Whether your property is on Hawthorn Way, Woodham Lane and Mayfield Avenue or a nearby road, our applicators can take on the job. You will find New Haw on the A318 and B385, so it’s easy for us to get to with everything needed for external mastic. If you are just outside New Haw, we cover Byfleet (1 mile south-east), Brooklands (1 mile east), Addlestone (1 mile north), Wisley (2 miles south) and St George's Hill (2 miles east). Larger places within reach include Guildford (8 miles south-west), Woking (4 miles south-west), Camberley (10 miles west), Epsom (10 miles east), Ewell (10 miles east) and Egham (6 miles north-west).
What’s near New Haw
We work in homes and buildings around Manor Farm, Fullbrook School and The Station pub and the streets around them. For rail, the closest station is Byfleet & New Haw station, roughly 0.6 miles east of the centre. Nearby you’ll also find The Hockey Museum (3.6 miles south-west) and Runnymede Hospital (2.3 miles north-west). Open spaces near New Haw include Papercourt Marshes and Ferris Meadow Lake.
The process
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and clear up. Most jobs take a few hours to a few days, depending on the length of joint and the access. A visit to New Haw is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- On commercial sites, let us know about site rules
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
How to get a quote
For external mastic in New Haw, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.