Hampshire · England
External & façade joints in Hawley, Hampshire
External mastic in Hawley from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Plants rooting in failed movement joints
- Movement joints with cracked, split or missing sealant
- Rigid filler in a joint that should flex
Your questions about external mastic in Hawley
Can you do external mastic in Hawley?
Yes. Our work covers London and the South East, and Hawley is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Will you come out to Hawley?
Yes. Hawley is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
How long does external mastic last?
It depends on the exposure, the movement and the product. Sealant is a maintenance item, so check the joints once a year and reseal when it splits.
Will there be a smell?
Some sealants have a smell while they cure, but it fades. Opening a window helps.
Can a movement joint be filled with mortar?
No, not where the gap is a movement joint. Filling it with mortar defeats its purpose and can lead to cracking. We’ll reseal it with a flexible sealant.
Do you do commercial work?
Yes, regularly. Larger jobs can be planned room by room or area by area.
Is it worth trying it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
What do you put in the joint?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
External mastic in Hawley, done properly
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we will confirm what’s needed to reach them safely. If you have water getting into walls through failed joints and cracked joints where brick meets render or frames, we can put it right.
Homes around Hawley range from older cottages to newer houses, with walls and rooflines of every type. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
We stand behind the work with a 12-month guarantee.
- Where
- Hawley (GU17)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Why it’s worth doing now in Hawley
Running new sealant over the old bead rarely lasts. New sealant does not bond well to old, weathered sealant, so we always take the old sealant out. Homes in smaller places like Hawley can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote.
Why Hawley clients choose us
- Quality sealants from Arbo and Everbuild
- Homes, businesses and hotels
- 12-month guarantee on every job
- We agree the colour with you first
Places near Hawley
What else we do in Hawley
When to call us in Hawley
Buildings move more than people expect. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. All of that ends up in the joint sealant.
If you can see any of these, it’s time to have the joints looked at:
- Failed sealant between panels on a façade
- Weathered mastic that no longer stretches
- Brick movement joints where the sealant has split
- Moss and dirt in joints with no sealant left
Homes close to Holy Trinity Church include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
What your quote should include
- How much experience the applicator has
- Whether you can choose the colour
- Are they insured?
- Whether they seal over old material or remove it
Different surfaces, different methods
Copings and trims
Coping joints that leak let water straight down into the wall. Sealing them early saves the wall below.
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.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
What we do, step by step
At the end, we look at the finished work together and explain the cure time. The work normally takes anything from a few hours to several days, depending on the building, depending on the size of the job. Parking around Hawley is normally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Let us know about stairs, lifts or work at height
- Tell us if parking is tricky
How to get a quote
Want a quote for external mastic? Please call 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and give you a clear price before we start.
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External mastic in Hawley: local notes
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.
For site and facilities teams at buildings such as Hawley Primary School, larger buildings have long runs of movement joint that eventually need resealing. Letting a property close to Blackwater station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Hawley is about 2 miles south of Sandhurst, in Hampshire. If you need external mastic in Hawley, please call 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Hampshire, Hawley included. Our Hampshire coverage runs to 683 places, Hawley among them. Our Reading page covers work nearby (12 miles or so).
Every address in GU17 is covered for external mastic, from the main roads to the quietest streets. We cover properties on London Road, Hawley Green and Fernhill Road. Hawley is on the A30, so it’s easy for us to get to with everything needed for external mastic. We also cover Watchmoor (1 mile east), Blackwater (1 mile north-west), Frogmore (1 mile north-west), York Town (1 mile north-east) and College Town (1 mile north). Within a short drive, we also cover Basingstoke (15 miles west), Fleet (4 miles south-west), Aldershot (6 miles south), Alton (15 miles south-west), Bordon (15 miles south) and Hook (8 miles west).
Local landmarks in Hawley
Typical jobs here are in homes near Mr Bumble pub, Fernhill School and Language College and Royal Military Academy Library. Hawley has its own railway station: Blackwater station. Well-known places in the area include Staff College Museum (1.6 miles north-east) and Frimley Park Hospital (1.7 miles east). Not far away are Wildmoor Heath and Horseshoe Lake.
What affects the quote in Hawley
The price is agreed before any work begins. It’s based on:
- How much old sealant there is and how hard it is to remove
- The size of the job
- The number of rooms or windows
- How easy the joints are to reach
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Asking for a quote
When you call or email, these details help:
- Where the property is
- Whether it’s a home or a business
- How many joints, rooms or windows are involved
- Photos by email, if that is easy
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you are ready, ring 0345 464 0079 or send us an email.
When something else is needed
We won’t take on work that won’t last, so here’s what sealant can’t put right:
- Cracking across the wall rather than at a joint
- Structural movement, which needs a surveyor or engineer
- Damp that isn’t coming from the joint
If in doubt, ring 0345 464 0079 or email us and we will say what we think.
Surfaces we seal
- Concrete & block
- Façade panels
- Joints between brick and frames
- Render & cladding joints
- Brickwork movement joints
- Copings & trims