Oxfordshire · England
External Mastic in Sun Rising
Movement joints in Sun Rising need attention? We cut out the old, prepare the joints and apply the right sealant.
- Moss and dirt in joints with no sealant left
- Movement joints filled with mortar instead of sealant
- Gaps where render, brick and frames meet
How the job changes by surface
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. Their movement joints are sealed over backing rod with a flexible sealant.
Joints between dissimilar materials
Each side of the joint may need its own preparation. We prepare both faces so the sealant bonds properly.
External mastic in Sun Rising, done properly
Low-level joints can generally be done from the ground. Where joints are higher up, tell us about the building when you get in touch and we’ll confirm what’s needed to reach them safely. Common call-outs are for failed seals between different materials and sealant that has lost its bond to the brick or render, across concrete & block, copings & trims and render & cladding joints.
Around Sun Rising, 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.
Every job comes with our one-year guarantee, wherever you are in Oxfordshire.
- Place
- Sun Rising (OX15)
- Wider area
- Oxfordshire
- Cover
- 12 months on all our work
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Questions from Sun Rising
Is external mastic in Sun Rising guaranteed?
Every job comes with our 12-month guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Do you cover smaller places like Sun Rising?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
What is backing rod for?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. Then the sealant bonds to two faces and can move.
What colours does the sealant come in?
The aim is a neat, even joint in a colour that suits the wall. We will talk through colour options before we start from the range available.
What is a movement joint?
It’s a deliberate gap that lets the wall expand and contract without cracking. It should be filled with flexible sealant, never mortar.
How long before the joint can be used?
That depends on the sealant used, so please follow the time we give you when we finish.
Do the sealants smell?
That depends on the sealant. Some smell for a while, some hardly at all.
What does external mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote.
The process
On the day, we look over the joints with you first, so there are no surprises. We protect the surfaces around the joints before any work begins. The work normally takes a few hours to a few days, depending on the length of joint and the access. In a small place like Sun Rising, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- 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.
Before we arrive
- Mention any sign-in or site rules at work premises
- Let us know about stairs, lifts or work at height
- Mention if the joints have been sealed before
Getting a quote
Call for a quick quote, or email us if that’s easier. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
Read more
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Make sure movement joints aren’t pointed over
- Fix overflowing gutters above sealed joints
- Avoid pressure-washing directly into sealant joints
- Ask before painting over external sealant
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years, so it’s worth resealing at the first signs.
Also in Sun Rising
Outside joints around Sun Rising
With historic houses such as Upton House (about 0.5 miles east) nearby, there’s older building stock in the area around Sun Rising as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Historic houses such as Upton House, about 0.5 miles east, show how far back building around Sun Rising goes. Around Sun Rising, as everywhere, external mastic is only as good as the preparation behind it.
Sun Rising is about 6 miles north-west of Banbury, in Oxfordshire. Jobs in Sun Rising get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. We cover 443 towns and villages across Oxfordshire, large and small. Oxford is on our list too, about 27 miles from Sun Rising.
Every address in OX15 is covered for external mastic. You’ll find streets such as Sun Rising Hill and Sugarswell Lane, and we cover them all. Other places close to Sun Rising include Edgehill (1 mile north-east), Ratley (2 miles north-east) and Hornton (2 miles east). Within a short drive, we also cover Banbury (6 miles south-east), Chipping Norton (12 miles south), Neithrop (6 miles south-east), Grimsbury (7 miles south-east), Ruscote (6 miles south-east) and Bloxham (8 miles south-east).
What’s near Sun Rising
Well-known places in the area include W. O. Bentley Memorial Foundation (3.4 miles south-east) and King John's Castle (3.7 miles north-west). Green spaces nearby include Edge Hill.
Landlords, agents and businesses in Sun Rising
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
For anyone letting property in or around Sun Rising, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
What sealant work cannot fix
Before booking, it’s worth knowing the limits too:
- Rising or penetrating damp from elsewhere in the wall
- Subsidence or other structural problems
- Failed render or damaged cladding panels
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Copings & trims
- Concrete & block
- Brickwork movement joints
- Façade panels
- Joints between brick and frames
- Render & cladding joints
What affects the cost of external mastic
The price is agreed before any work begins. It’s based on:
- The type of sealant required
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
- When we can work, for business premises
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and give you a clear quote before any work starts.
Helping us quote
What to tell us when you ask for a quote:
- Whether it’s a home or a business
- What’s wrong with the joints now
- Roughly how big the job is
- Photos by email, if that is easy
For external mastic in Sun Rising, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.