The Mastic Doctor team standing beside their branded vans outside an office building
East Sussex · England

Mastic contractors in Penhurst

Our CSCS-carded applicators take on mastic packages for new-build and refurbishment projects in Penhurst. Send photographs or drawings for a fixed quote.

  • Failed sealant in an existing building being refurbished
  • Internal caulk splitting as the building dries out
  • Oversized or tapered gaps around new frames
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS accredited
£5m public liability

Construction mastic near Penhurst

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Should maintenance staff do it?

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong typically costs more in the end than doing them right.

How we handle construction mastic in Penhurst

Buyers, tenants and clients notice sealant lines long before they notice the structure. A smeared bead round a window or a gap behind a worktop ends up on the snag list and clearing them late eats into the handover window. We seal so the snag list stays short, area by area through the programme. Most enquiries involve failed sealant in an existing building being refurbished and internal caulk splitting as the building dries out, across sanitary and kitchen joints, cladding and panel joints and internal decorators’ caulk. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Penhurst, preparation and product choice get the time they need.

Around smaller places like Penhurst, building work usually means conversions of farm buildings, a few new houses or an extension to a hall or school. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.

Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and the quote explains what it covers.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
Penhurst (TN33)
Region
East Sussex
Guarantee
12 months on our workmanship
Price
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026

On site: what to expect

Inspect, seal, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. For work around Penhurst, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.

  1. We start with the drawings, specification and programme.
  2. We take off quantities and return a fixed quote.
  3. The sequence is agreed with the site manager.
  4. Each area is sealed when it’s released.
  5. Every joint is cleaned, set to depth and sealed with the specified product.
  6. Snags are cleared and the package signed off with our 12-month guarantee.

What we need from you

  • Tell us which areas need to stay in use
  • Let us know about inductions and permits
  • For older buildings, check the asbestos register before work

Get a fixed quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to speak to us on 01277 525 020 or email us with what you know.

Ask for a quote

Related advice

Construction mastic in Penhurst: the local picture

Rainfall across the South East, Penhurst included, is lower than in many parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, which is why external dates are agreed with the site manager. Penhurst lies roughly 45 miles out from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, which keeps mastic packages in demand.

On a healthcare site such as Bexhill Hospital, 5.8 miles to the south-east of Penhurst, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully. With historic properties like Bateman's, 4.7 miles to the north of Penhurst, in the area, refurbishment work often meets old masonry that needs compatible sealants.

Penhurst is about 6 miles north-west of Bexhill-on-Sea, in East Sussex. Looking for construction mastic in Penhurst? We can help. Across East Sussex, 308 places are covered, including Penhurst. Brighton is covered too, some 24 miles away.

Work on mastic packages is covered throughout TN33. Just outside Penhurst, we also work in Steven's Crouch (2 miles south-east), Netherfield (2 miles north-east), Twelve Oaks (2 miles north), Hollingrove (3 miles north) and Brightling (3 miles north). A short drive away, we cover Eastbourne (11 miles south-west), Hastings (8 miles south-east), Bexhill-on-Sea (6 miles south-east), Hailsham (8 miles south-west), Crowborough (14 miles north-west) and St Leonards (8 miles south-east).

Local landmarks in Penhurst

We work on buildings around Ashburnham Park and the streets around them. The nearest railway station is Battle station, roughly 3.8 miles east of the centre. Well-known places in the area include Battle Museum of Local History (3.2 miles east) and Bexhill Hospital (5.8 miles south-east). Green spaces nearby include Senlac Hill.

Map of Penhurst © OpenStreetMap contributors

Common questions from Penhurst clients

Can you work on a hospital site such as Bexhill Hospital?

Yes, provided the work is planned with the site’s estates team. We follow the site’s permits, sign-in and infection-control procedures in every area.

Will you fit the mastic around our build programme in Penhurst?

Yes, we work to the programme and the sequence the site sets. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Does weather affect external mastic work?

Conditions have to suit the product before external work starts. Sealing in poor conditions risks adhesion failure so it’s better to wait.

Can you work while the building is occupied?

Yes, as long as we plan it. Tell us your site hours and access windows and we will plan around them.

Can you work plot by plot or floor by floor?

Our work is sequenced around the programme. Each plot, floor or elevation is sealed when it’s ready and we tell you if something stops an area being sealed.

Do you take on multi-site work?

Yes. A group of buildings can go on one quote, with one point of contact across South East England, Greater London and Scotland.

Can weather delay the job?

For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.

Commercial clients in Penhurst

CHAS accredited and a Constructionline member, we make supplier vetting simple. We’re fully insured, and our insurance certificate can go with the quote.

Main contractors use us as their sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.

What sets the cost

What shapes the price:

  • Location, for remote and island sites
  • Whether old sealant has to be cut out first
  • Phasing around occupants
  • Site requirements such as inductions and permits

Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a quote.

Details that help us quote

Whether it’s one area or a whole building, these details speed things up:

  • The postcode of the building
  • Access details, including height
  • A wide shot and a close-up of the area
  • Approximate linear metres or a joint schedule

Need a figure for a tender or a budget? Send the scope and any drawings, and we will return a fixed quote that you can work with. If you have questions first, call 01277 525 020 or email drawings and photos.

What we can’t put right

Honesty saves time and money. New sealant won’t cure:

  • Approving fire stopping as compliant
  • Designing joint widths or choosing the specification (that sits with the designer)
  • Faulty frames rather than failed sealant

Not sure which it is? You can phone 01277 525 020 or use the quote form and we will tell you honestly before you book.

Where we work in Penhurst

  • Sanitary and kitchen joints
  • Floor and skirting junctions
  • Internal decorators’ caulk
  • Brick and block movement joints
  • Cladding and panel joints
  • Window and door perimeters

Surface by surface

Fire-rated sealant where specified

Not every penetration suits a sealant. Other products are used for some services and gaps, and we’ll tell you if the detail calls for something else. Tell us what records you need and we will confirm with the quote.

Internal decorators’ caulk

Where the specification calls for it, acrylic decorators’ caulk goes on non-moving internal gaps before painting. It’s paintable and suits gaps that don’t move.

Accreditations

Trusted. Accredited. Insured.