East Sussex · England
External Mastic in Cripp's Corner
External mastic for Cripp's Corner and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Plants rooting in failed movement joints
- Joints where the bead has come unstuck
- Water getting into walls through failed joints
How we handle external mastic in Cripp's Corner
Low-level joints can normally be done from the ground. Where joints are higher up, tell us about the building when you get in touch and we will confirm what’s needed to reach them safely. We work on brickwork movement joints, façade panels and concrete & block, and people most often call us about sealant pulling away from one side of the joint and cracked joints where brick meets render or frames.
Around Cripp's Corner, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- Cripp's Corner (TN32)
- Region
- East Sussex
- Guarantee
- One year on every job
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Why deal with it now?
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner. Around Cripp's Corner, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Leaving a failed joint generally makes the job bigger, not smaller, because water and mould keep working on it. If you’re not sure whether it needs doing, call 0345 464 0079 or email us and we’ll give you an honest view and a quote.
Why choose Mr Mastic in Cripp's Corner
- Sealant colour chosen to suit
- 20+ years of sealant experience
- 4.9 on Google from 180+ five-star reviews
- You choose the colour before work begins
Read our cost guide or customer reviews.
Landlord and commercial work in Cripp's Corner
We work for landlords and letting agents as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Questions from Cripp's Corner
Can you do external mastic in Cripp's Corner?
Yes. We work across London and the South East, and Cripp's Corner is part of that. You can call 0345 464 0079 or email us and let us know what needs doing.
Is Cripp's Corner within the area you cover?
Yes, Cripp's Corner is covered. 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.
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.
What do you need from me for a quote?
A short description and the location, with photos by email if possible. We’ll ask anything else we need to know.
Can you do several jobs on one visit?
Yes. Just list everything you need and we’ll quote it together.
How much does external mastic cost in Cripp's Corner?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint.
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.
Towns and villages near Cripp's Corner
Also in Cripp's Corner
When to call us in Cripp's Corner
Sunlight, wet weather and frost wear exterior sealant down. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.
The problems people usually mention when they call are:
- Hard, crazed mastic that has stopped moving
- Sealant pulling away from one side of the joint
- Joints pointed up with cement by mistake
- Failed sealant between panels on a façade
Letting a property close to Robertsbridge station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Comparing quotes
- How the joint is cleaned and prepared
- Are they insured?
- How the colour is chosen
- What guarantee comes with the work
Quotes for external mastic in Cripp's Corner
Jobs vary more than people expect. The main factors:
- Mould in or behind the old joints
- The amount of work
- Working hours on commercial sites
- Whether the work is at height
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
What to tell us for a quote
When you contact us, it’s useful to know:
- Where the job is, and your postcode
- Roughly how big the job is
- Any access issues, like height or stairs
- Photos by email, if that is easy
To get a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. We will send you a clear quote before any work starts.
Different surfaces, different methods
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. We reseal them with an exterior sealant suited to the material.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. If that is happened, we rake it out and reseal it properly where it can be done safely.
Outside joints around Cripp's Corner
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Durhamford Manor (about 1.5 miles south) nearby, there’s older building stock in the area around Cripp's Corner as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
If you live in an older home near St Marks Staplecross, older walls, gutters and the joints where extensions meet them need a flexible sealant. For site and facilities teams at buildings such as Staplecross Methodist Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Cripp's Corner is about 7 miles north of Hastings, in East Sussex. Cripp's Corner gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Cripp's Corner is one of 289 towns and villages in East Sussex we cover for external mastic. For nearby work, see our Brighton page (30 miles or so).
All of TN32 is within our area for external mastic. Neighbouring places we cover for external mastic include Swaile's Green (1 mile south), Staplecross (1 mile north-east), Whatlington (2 miles south-west), Sedlescombe (2 miles south) and Snagshall (2 miles north). We also work in nearby towns such as Hastings (7 miles south), Bexhill-on-Sea (8 miles south), Hailsham (14 miles south-west), St Leonards (7 miles south), Hastings Old Town (8 miles south) and Belmont (8 miles south).
Near you in Cripp's Corner
We work in homes and buildings around The White Hart pub. Cripp's Corner’s nearest station is Robertsbridge station, about 3 miles north-west. Nearby you will also find Conquest Hospital (5.6 miles south) and Nortons Farm Museum (3.2 miles south). Open spaces near Cripp's Corner include Senlac Hill.
Aftercare tips
A little care helps the new joints last. We recommend:
- Avoid pressure-washing directly into sealant joints
- Check the sealant is paintable before painting near it
- Deal with leaking gutters that soak the joints below
- Act on the first splits you see
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead and let water in behind.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
How the visit works
We keep the work tidy and contained to the area we are working on. Expect the work to take a few hours to a few days, depending on the length of joint and the access, and we explain the cure time before we leave. In a small place like Cripp's Corner, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Keep children and pets away from the work area
- On commercial sites, let us know about site rules
Getting a quote
We don’t publish a price list. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or email us.