Hampshire · England
Upton Grey External Mastic
Our applicators work in Upton Grey on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly.
- Joints with sealant missing in places
- Rigid filler in a joint that should flex
- Sealant that has lost its bond to the brick or render
How we quote for external mastic
We do not publish a price list, because jobs vary so much. The quote depends on:
- Mould in or behind the old joints
- How easy the joints are to reach
- The size of the job
- The old material and how stubborn it is
The cost depends on how much there is to do, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
Photos help, but a description is a good start. Please mention:
- What the problem is, such as mould, gaps, leaks or cracking
- If someone has resealed it before
- Whether it’s a home or a business
- How many joints, rooms or windows are involved
For external mastic in Upton Grey, call 0345 464 0079 or email us. Tell us what the problem is and where, and we will agree the price before any work begins.
External mastic for homes and businesses in Upton Grey
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product. If you’re dealing with cracked joints where brick meets render or frames and damp patches traced to an open external joint, we can put it right, whatever the surface.
Around Upton Grey, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in, and they need the right sealant at the right depth.
Big or small, it’s backed by our one-year guarantee.
- Location
- Upton Grey (RG25)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Questions from Upton Grey
Can you help a landlord with a rental near Hook station?
Yes, we work for landlords and agents. You can call 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Is Upton Grey in your area for external mastic?
Yes, Upton Grey is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we will send you a clear quote.
Is it messy?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used.
How much does external mastic cost in Upton Grey?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Can you seal joints between render and window frames?
Yes. Materials like render, brick, metal and uPVC all move differently, so the joint between them must be flexible. The sealant is matched to both sides.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before resealing.
DIY versus a professional finish
If you do try it yourself, take your time over the 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.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
Keeping the joints in good condition
Looking after new joints is easy, and it makes a real difference:
- Have failed joints looked at early
- Keep high-pressure jets off the joints
- Leave the joints unpainted unless we have said otherwise
- Deal with leaking gutters that soak the joints below
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
Once a joint can’t move, the wall finds another way, generally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
What we are called out for in Upton Grey
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.
Common reasons people contact us are:
- Panel joints letting water in
- Cracked joints where brick meets render or frames
- Damp patches traced to an open external joint
- Movement joints with cracked, split or missing sealant
Letting a property close to Hook station? Then split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- How much experience the applicator has
- What preparation is included
- What insurance they hold
- How hidden problems are handled
Nearby places to Upton Grey
Other services in Upton Grey
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll quote.
We work for landlords and letting agents as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
What external mastic looks like in Upton Grey
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Church of St Mary, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Upton Grey is about 5 miles south-east of Basingstoke, in Hampshire. If you need external mastic in Upton Grey, please phone 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Hampshire, Upton Grey included. 683 places in Hampshire are on our list, large and small. There’s also a page for Reading, roughly 15 miles from Upton Grey.
We work across RG25 for external mastic and the streets around it. You’ll find streets such as Weston Close, Weston Road and Holme Hill, and we cover them all. Neighbouring places we cover for external mastic include Nashes Green (2 miles south-west), Mapledurwell (3 miles north), Andwell (3 miles north), Water End (3 miles north) and Old Basing (3 miles north-west). Further out, we also cover Basingstoke (5 miles north-west), Farnborough (11 miles north-east), Fleet (8 miles north-east), Aldershot (11 miles east), Alton (5 miles south) and Yateley (11 miles north-east).
Landmarks near Upton Grey
Typical jobs here are in homes near Hoddington Arms Public House, among other places. The closest station to Upton Grey is Hook station, roughly 4 miles north-east of the centre. Other landmarks nearby include Basingstoke and North Hampshire Hospital (5.8 miles north-west) and Gliding Heritage Centre (3 miles south). For a walk, there’s Holybourne Hill and Dogmersfield Lake.
What happens on the day
On the day, we start by going over the job with you, so there are no surprises. Surfaces next to the work are protected before work begins. Most jobs take a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Upton Grey, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Mention any tricky access
- Tell us about any water getting in
- Keep pets and children clear of the area while we work
Ask for a quote
We quote each job on its own, so start by telling us what you need. Simply phone 0345 464 0079 or drop us an email and describe the job.
Advice
Why deal with it now?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost near the open joint, so the problem grows beyond the joint itself. In a small place like Upton Grey, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Why Upton Grey clients choose us
- 20+ years of sealant experience
- We never seal over old sealant
- Rated 4.9 stars on Google
- Colour agreed with you before we start
See our cost guide or customer reviews.