Hertfordshire · England
External & façade joints in Pimlico, Hertfordshire
Sealing brickwork movement joints, render, cladding and façade joints for Pimlico, backed by a 12-month guarantee. Call for a quick quote.
- Weathered mastic that no longer stretches
- Joints pointed up with cement by mistake
- Joints where the bead has come unstuck
About our external mastic in Pimlico
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two where a rigid filler would soon crack. If you’re dealing with joints pointed up with cement by mistake and weeds or debris growing in open joints, we can put it right, on joints between brick and frames, render & cladding joints and copings & trims alike.
Outside joints can only be sealed when they’re dry, so work in Pimlico is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
All our work comes with a one-year guarantee.
- Location
- Pimlico (HP3)
- Region
- Hertfordshire
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Walls and rooflines in Pimlico
With historic houses such as High Elms Manor (about 2.2 miles south-east) nearby, there’s older building stock in the area around Pimlico 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. 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.
Homes close to Church of the Ascension include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant. Schools such as Bedmond Academy are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Pimlico is about 2 miles south-east of Hemel Hempstead, in Hertfordshire. For external mastic in and around Pimlico, please ring 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Hertfordshire. Pimlico is one of 381 towns and villages in Hertfordshire we cover for external mastic. Our London page covers work nearby.
Here we cover the HP3 postcode area for external mastic. Local streets include Bedmond Road and Hyde Lane, all of which we cover. Neighbouring places we cover for external mastic include Bedmond (1 mile south), Westwick Row (1 mile north), Nash Mills (2 miles west), Leverstock Green (2 miles north-west) and Bennetts End (2 miles north-west). Further out, we also cover Watford (5 miles south), St Albans (4 miles east), Welwyn Garden City (11 miles north-east), Harpenden (7 miles north-east), Hatfield (8 miles east) and Hertford (15 miles east).
What’s near Pimlico
We work in homes and buildings around The Swan Public House and Longdean School and the streets around them. The nearest railway station is Kings Langley station, roughly 1.9 miles south-west of the centre. Nearby you will also find Village Arcade St Albans (3.5 miles north-east) and Hypocaust Museum (2.9 miles north-east). Open spaces near Pimlico include Verulamium Lake and Longspring Wood.
What affects the quote in Pimlico
For a quick quote, just ask. The main things that affect it are:
- How much there is to do
- How much old sealant there is and how hard it is to remove
- The type of sealant required
- Access and height
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you are not sure whether it needs doing, call 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
Asking for a quote
Before you ask for a quote, have a think about:
- The problem you’ve noticed
- A few pictures by email, if you can
- If someone has resealed it before
- Any access issues, like height or stairs
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or drop us an email.
Do you need external mastic in Pimlico?
Sunlight, wet weather and frost wear exterior sealant down. In time it goes hard, crazes on the surface and stops stretching, so the joint eventually tears or comes away from one side.
It’s worth asking for a quote if you see:
- Movement joints with cracked, split or missing sealant
- Weeds or debris growing in open joints
- Failed sealant between panels on a façade
- Damp patches traced to an open external joint
If you let a flat or house near Kings Langley station, outside joints that have cracked can let damp into a rental, so check them between lets.
Comparing quotes
- How long to leave it before use
- Whether they seal over old material or remove it
- What preparation is included
- What insurance they hold
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Get split or bare joints resealed while the damage is small
- Keep movement joints as flexible joints, not mortar
- Show decorators and builders where the movement joints are
- Ask before painting over external sealant
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage.
What we can’t put right
We won’t take on work that will not last, so here’s what sealant cannot put right:
- Cracks in the bricks or render themselves, away from the joints
- Movement that’s more than a sealant joint can take
- Loose or hollow render, which needs re-rendering
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Surfaces we seal
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
- Render & cladding joints
- Façade panels
- Copings & trims
Why it’s worth doing now in Pimlico
A failed movement joint lets water into the wall, behind render and cladding. Resealing early keeps the job to the joint itself, instead of the wall and finishes around it. Where a wall is exposed, as many are in small places like Pimlico, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Why Pimlico customers choose us
- Trusted Arbo and Everbuild sealants
- Sealant colour chosen to suit
- Colour agreed with you before any work starts
- We’re fully insured
How it works
Most of a good job is in the preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it usually takes anything from a few hours to several days, depending on the building. In a small place like Pimlico, access is normally the main thing to plan. 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.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Mention any sign-in or site rules at work premises
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
How to get a quote
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we’ll come back to you with a quote.
Advice
Landlords, agents and businesses in Pimlico
Letting agents and landlords in Pimlico can book us as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Also near Pimlico
More services for Pimlico
Your questions about external mastic in Pimlico
Is Pimlico in your area for external mastic?
Yes, Pimlico is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and tell us what needs doing.
Do you work for landlords with property near Kings Langley station?
Yes, we work for landlords and agents. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
How much does external mastic cost in Pimlico?
We don’t 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.
Does someone need to be in?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you do not need to watch us work.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint before we leave.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and we’ll quote it together.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Why is there a gap in my brick wall?
A vertical gap in a long brick wall is generally a movement joint. It gives the wall room to move, and it should be sealed with a flexible sealant.