Hampshire · England
Temple Valley External Mastic
External mastic for Temple Valley, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Leaking joints around cladding and façade panels
- Weathered mastic that no longer stretches
- Failed seals between different materials
Outside joints around Temple Valley
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. With historic houses such as Hinton Ampner House (about 4.2 miles east) nearby, there’s older building stock in the area around Temple Valley as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Hinton Ampner House, about 4.2 miles east, is one of the historic houses in the wider area around Temple Valley.
Temple Valley is about 3 miles east of Hyde, in Hampshire. We carry out external mastic for householders, landlords and businesses in Temple Valley and nearby, as part of our work across Hampshire. Our area takes in 683 places across Hampshire, from the larger towns to small villages. There’s also a page for Southampton, roughly 12 miles from Temple Valley.
Jobs for external mastic in SO21 is quoted and booked the same way as anywhere else. Other places close to Temple Valley include Easton (2 miles north-west), Winnall (2 miles west), Morestead (2 miles south-west), Ovington (2 miles north-east) and Itchen Abbas (2 miles north). Within a short drive, we also cover Winchester (3 miles west), Eastleigh (8 miles south-west), Fareham (14 miles south), Andover (15 miles north-west), Horndean (15 miles south-east) and Totton (15 miles south-west).
What’s near Temple Valley
The nearest railway station is Winchester station, roughly 3.4 miles west. Other landmarks nearby include Winchester College Treasury (3 miles west) and Wolvesey Castle (2.9 miles west). Not far away are Winnall Moors and Twyford Down.
External mastic in Temple Valley, done properly
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. If you are dealing with cracked joints where brick meets render or frames and weathered mastic that no longer stretches, we can put it right, whatever the surface.
Older homes in small places like Temple Valley may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
You are covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Place
- Temple Valley (SO21)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Also near Temple Valley
More services for Temple Valley
How the job changes by surface
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant in a colour to suit the brick.
Why act early in Temple Valley
Running new sealant over the old bead rarely lasts. New sealant doesn’t bond well to old, weathered sealant, so we always take the old sealant out. Where a wall is exposed, as many are in small places like Temple Valley, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Why us?
- Approved under the ARBOMaster scheme
- We agree the colour with you first
- Homes, businesses and hotels
- 20+ years of sealant experience
See what affects the cost and customer reviews.
Do you need external mastic in Temple Valley?
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it can’t stretch and rips as the joint opens.
It’s worth asking for a quote if you see:
- Rain getting behind render or cladding at a joint
- Moss and dirt in joints with no sealant left
- Movement joints filled with mortar instead of sealant
- Panel joints letting water in
Letting a property close to Winchester station? Then split movement joints are easy to miss on a rental until damp shows inside.
Comparing quotes
- Is VAT in the price?
- Are they insured?
- Whether you can choose the colour
- Which sealant they’ll use, and why
Aftercare tips
After the cure time, these simple habits help:
- Deal with leaking gutters that soak the joints below
- Ask before painting over external sealant
- Avoid pressure-washing directly into sealant joints
- Make sure movement joints aren’t pointed over
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead over time.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years.
Temple Valley: your questions answered
Is Temple Valley in your area for external mastic?
Yes, Temple Valley is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear price.
Do you cover smaller places like Temple Valley?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
What colours does the sealant come in?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We pick the one that suits your wall best so it doesn’t stand out.
Is there a guarantee?
Yes: twelve months. If anything isn’t right with the work within the year, let us know and we’ll sort it.
Can you do several jobs on one visit?
Of course. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
Do you work for letting agents?
Yes. As well as householders, we work for landlords, agents, businesses and hotels in Temple Valley.
How much does external mastic cost in Temple Valley?
We don’t publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Are you insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
What we do, step by step
On the day, there’s very little for you to do. Show us the job and we will take it from there. The job generally takes a few hours to a few days, depending on the length of joint and the access, including the tidy-up. In a small place like Temple Valley, 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.
- 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.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Tell us if parking is tricky
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any water getting in
How to get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved.
Related advice
When something else is needed
To be straight with you, some problems need a different trade:
- Cracking across the wall rather than at a joint
- Subsidence or other structural problems
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If you are not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer.
Joints and surfaces we work on
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Copings & trims
- Concrete & block