Sealants

Buy Sealants Online

Gaps and joints are where jobs start to look tired. A bead that pulls away, cracks, or goes mouldy turns into rework fast, especially in kitchens, bathrooms, hallways and around frames. The fix is simple: use the right sealant for the surface and the conditions, then apply it cleanly.

At Orion Supplies, you can buy sealants and silicone sealant online for trade maintenance and refurbishment, with options chosen for strong adhesion, a neat finish, and long-lasting performance in busy homes.

Silicone sealant for bathrooms, kitchens and wet areas

If you’re sealing around baths, showers, basins, splashbacks or worktops, silicone sealant is the go-to. It stays flexible, handles moisture, and helps protect joints where water and cleaning products are part of daily life.

What trade silicone is bought for:

• watertight sealing around sanitaryware and kitchen edges
• clean lines along tiles and junctions
• a bead that stays flexible instead of splitting when surfaces move

For higher-moisture areas, mould resistance matters. A silicone that’s designed for wet environments helps keep joints cleaner for longer and reduces the chance of early blackening along the bead.

General-purpose sealants for everyday gaps and finishing

Not every joint is a bathroom joint. You’ll often need a reliable seal for small gaps and finishing lines around frames, trims, and general building junctions. The right general-purpose sealant helps you close gaps neatly, reduce draught points, and improve the look of edges at handover.

Common uses include:

• around window and door frames
• sealing small joints before decorating
• tidying gaps where movement is expected

A sealant that applies smoothly, holds its shape, and doesn’t slump makes it easier to keep lines straight and consistent.

Paintable sealant for internal gaps

Some areas need sealing and then finishing over. Paintable sealant is typically used for internal gaps around skirting, architraves, plasterwork, and similar junctions where you want a clean line that disappears once painted.

Use paintable sealant when you need to:

• seal fine gaps without leaving a visible edge
• finish around trims and internal junctions
• prepare surfaces for painting without the joint cracking open later

This is especially useful in room refresh work where small gaps can make a newly painted space look unfinished.

Exterior sealing where weather and movement matter

External joints and exposed edges face bigger demands: temperature changes, rain, and constant movement between materials. For outdoor applications, you want a sealant that can handle weathering and keep its flexibility over time.

Typical uses:

• exterior frames and junctions
• gaps that allow water ingress if left open
• areas where expansion and contraction are expected

A seal that holds outside reduces early breakdown and helps avoid repeat visits caused by water getting into the wrong place.

Choosing the right sealant without overthinking it

A practical way to decide:

• Silicone sealant: wet areas and joints that need strong water resistance and flexibility
• Paintable sealant: internal finishing lines that need to be painted over
• General-purpose / exterior options: gaps and junctions where durability and movement handling matter

If you’re unsure, match the sealant to the environment first (wet, dry, exterior), then match it to the finish you need (painted or not).

Application that keeps the bead clean

Even the best sealant looks poor if the bead is messy. These habits keep results sharper:

• apply to a clean, dry surface
• cut the nozzle for the bead size you actually need
• keep steady pressure so the bead doesn’t wave or blob
• tool the bead while it’s fresh so it bonds to both sides of the joint

Good sealants make this easier because they apply smoothly and hold a consistent line.

Complete the repair setup

Sealants often sit alongside other repair and finishing products. Many customers also buy plaster, fillers, sealants, plus adhesives, repair compounds and the right tools, so repairs, joints and edges can be finished properly in one run.