Hampshire · England
External Mastic in Hawkley
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Hawkley and across Hampshire. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Sealant pulling away from one side of the joint
- Leaking joints around cladding and façade panels
- Brick movement joints where the sealant has split
External mastic in Hawkley: local notes
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to Church of St Peter and St Paul include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Hawkley is about 4 miles north of Petersfield, in Hampshire. Across the GU33 area, we can carry out external mastic at your property. Across Hampshire, we cover 683 places, and Hawkley is one of them. For nearby work, see our Portsmouth page, about 18 miles away.
All of GU33 is within our area for external mastic, from the main roads to the quietest streets. We also cover the places around Hawkley: Lower Green (1 mile north), Oakshott (1 mile south-west), Empshott (2 miles north), Steep Marsh (2 miles south) and Steep (2 miles south). Within a short drive, we also cover Havant (14 miles south), Horndean (11 miles south), Aldershot (15 miles north-east), Alton (7 miles north), Waterlooville (13 miles south) and Petersfield (4 miles south).
What’s near Hawkley
In Hawkley, that means homes and buildings near Hawkley Inn. Hawkley’s nearest station is Liss station, about 2.1 miles south-east of the centre. A little further out are The Romany Museum (2.7 miles north) and Petersfield Community Hospital (3.6 miles south). Green spaces nearby include Wheatham Hill and Liss Riverside Railway Walk South.
External mastic in Hawkley, done properly
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two where mortar or filler would crack. Common call-outs are for rigid filler in a joint that should flex and panel joints letting water in, across façade panels, concrete & block and joints between brick and frames.
Outside joints can only be sealed when they’re dry, so work in Hawkley is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
You are covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or email us.
- Where
- Hawkley (GU33)
- Wider area
- Hampshire
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Don’t let climbing plants root in the sealant
- Check the sealant is paintable before painting near it
- Make sure movement joints are not pointed over
- Look over the joints every year, ideally after winter
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges over time.
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, all bigger jobs than a reseal.
How the visit works
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. In a small place like Hawkley, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- 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.
Getting ready for the visit
- Clear items away from the joints we’re working on
- Let us know if you’ve seen damp or leaks
- Mention any sign-in or site rules at work premises
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, phone 0345 464 0079 or drop us an email.
Read more
Why deal with it now?
A failed movement joint lets water into the wall 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 Hawkley, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
Why book with us
- 20+ years of sealant experience
- Homes, businesses and hotels
- We’re fully insured
- Rated 4.9 stars on Google
Take a look at our cost guide and our reviews.
Also near Hawkley
More services for Hawkley
How the job changes by surface
Render joints
The face of render can be soft, so a sealant that stretches easily protects the edges. We prime where the product needs it.
Copings and trims
Copings expand and contract through the day, so a flexible sealant suits them best in all weathers.
Signs you need external mastic in Hawkley
UV, rain and frost all age exterior sealant. Over the years it hardens, cracks on the surface and loses its give, so the next time the wall moves, it splits or pulls away.
Any of these means the joints need attention:
- Sealant pulling away from one side of the joint
- Plants rooting in failed movement joints
- Joints with sealant missing in places
- Leaking joints around cladding and façade panels
Rented homes near Liss station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Before booking anyone
- How much experience the applicator has
- How hidden problems are handled
- Whether you can choose the colour
- Is the old sealant removed completely?
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Hawkley: your questions answered
Can you do external mastic in Hawkley?
Yes, Hawkley is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we will give you a clear quote.
Do you work for landlords with property near Liss station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
Do you seal joints where cladding meets other materials?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.
How do you reach high-level joints?
It depends on the building. Tell us the height, the number of joints and what’s below them, and we will confirm what access is needed.
Should I point up the gap in my brickwork?
No. Cement or mortar can’t stretch and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
How long will you be here?
Most jobs take a few hours for a handful of joints, longer for a whole elevation. We’ll confirm how long when we quote.
What is backing rod for?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back, so the joint can move.
Can you seal over the old sealant?
No, it won’t last. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
Honest limits
A few problems are outside what sealant work can do:
- Loose or hollow render, which needs re-rendering
- Rising or penetrating damp from elsewhere in the wall
- Adding movement joints to masonry that has none
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think before you book.
What we seal
- Brickwork movement joints
- Concrete & block
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Façade panels