Hampshire · England

Bramshill External Mastic

Sealing brickwork movement joints, render, cladding and façade joints in Bramshill, with a 12-month guarantee on every job. Ask us for a quote.

  • Joints pointed up with cement by mistake
  • Damp patches traced to an open external joint
  • Sealant pulling away from one side of the joint

External mastic near Bramshill

Looking after it afterwards

Good habits help new joints last longer. A few tips:

  • Keep high-pressure jets off the joints
  • Check external joints each spring
  • Tell anyone working on the walls about the movement joints
  • Do not let climbing plants root in the sealant

Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead 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 which cost more to put right than the joint.

How we handle external mastic in Bramshill

As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Some surfaces need a primer before sealing. If you have joints with sealant missing in places and failed sealant between panels on a façade, we can put it right.

Outside joints can only be sealed when they’re dry, so work in Bramshill 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 call 0345 464 0079 or email us.

Place
Bramshill (RG27)
Region
Hampshire
Cover
A year, on every job
Quotes
A clear quote up front
Call
0345 464 0079
Updated
26 October 2026
Eleven members of the Mr Mastic team standing in front of branded white vans

DIY versus a professional finish

A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.

The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.

How the visit works

When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours to a few days, depending on the length of joint and the access. In a small place like Bramshill, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.

  1. We start by walking round the building and agreeing the joints and the access.
  2. Every bit of old sealant and any mortar or debris is cut out.
  3. Joint faces are cleaned back and primed if the sealant needs it.
  4. Backing rod sized to the joint goes in to set the depth.
  5. The exterior sealant is applied, tooled and checked along its length.

Getting ready for the visit

  • Mention if the joints have been sealed before
  • Keep pets and children clear of the area while we work
  • For indoor joints, keep the area dry beforehand if you can

How to get a quote

For external mastic in Bramshill, 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 we start.

Ask for a quote

Read more

How the job changes by surface

Brickwork movement joints

Brick moves with heat and moisture, and grows a little over time. The movement joint takes that up, so the sealant in it must stay soft and stretchy.

Joints between dissimilar materials

Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.

Landlord and commercial work in Bramshill

If you manage several properties in or around Bramshill, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.

Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.

Walls and rooflines in Bramshill

With historic houses such as Stratfield Saye House (about 2.8 miles west) nearby, there’s older building stock in the area around Bramshill as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. 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.

If you let a flat or house near Winchfield station, outside joints that have cracked can let damp into a rental, so check them between lets.

Bramshill is about 4 miles west of Yateley, in Hampshire. If you need external mastic in Bramshill, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We cover Hampshire from our Crawley base. Our Hampshire coverage runs to 683 places, and Bramshill is one of them. We also work in Reading, around 7 miles away.

We cover every part of the RG27 postcode area for external mastic. We also cover Hazeley (1 mile south), Heckfield Heath (1 mile west), Heckfield (1 mile west), Hound Green (2 miles south-west) and Riseley (2 miles north-west). We also work in nearby towns such as Basingstoke (9 miles south-west), Farnborough (8 miles south-east), Fleet (6 miles south-east), Aldershot (10 miles south-east), Alton (14 miles south) and Yateley (4 miles east).

Near you in Bramshill

Locally, jobs take us to homes and businesses close to Wellington Country Park, among other places. The closest station to Bramshill is Winchfield station, roughly 4.3 miles south. Nearby you will also find Fleet Community Hospital (5.3 miles south-east) and Beaumys Castle (3.1 miles north-west). Open spaces near Bramshill include Horseshoe Lake and The Marshes Local Nature Reserve.

Map of Bramshill © OpenStreetMap contributors

Signs you need external mastic in Bramshill

Buildings move more than people expect. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. The sealant in the movement joints takes that strain.

It’s worth asking for a quote if you see:

  • Hard, crazed mastic that has stopped moving
  • Sealant pulling away from one side of the joint
  • Moss and dirt in joints with no sealant left
  • Cracked joints where brick meets render or frames

Homes close to Mission Church include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.

What your quote should include

  • What product goes in the joint
  • Are they insured?
  • How the colour is chosen
  • What guarantee comes with the work

How to choose a mastic man

Why act early in Bramshill

The longer a joint stays open, the more water the wall takes in. In cold weather, frost can damage wet brick and render around the joint, so the problem grows beyond the joint itself. Around Bramshill, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.

There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.

Why us?

  • Approved under the ARBOMaster scheme
  • We agree the colour with you first
  • Neat joints and a tidy finish
  • Trusted Arbo and Everbuild sealants

See our cost guide and our reviews.

Common questions in Bramshill

Can you do external mastic in Bramshill?

Yes, Bramshill is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job.

Is Bramshill within the area you cover?

Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.

Where are you based?

We work from Crawley. Our applicators cover Bramshill.

Will you leave a mess?

Very little: the area around the joints is protected first, and we tidy up before we go.

Is it OK to seal over old sealant?

No. The old sealant always comes out first, so the new joint bonds to clean surfaces.

Why do you put foam in the joint first?

Backing rod controls the sealant depth and keeps it off the back of the joint. That way it bonds to the two sides only and can stretch.

Are you fully insured?

Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.

Do you work for hotels and businesses?

Yes. Hotels, offices and other businesses use us.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job