CATEGORY FAQS
Plaster, Fillers & Sealants FAQs
Answers to the most common questions about our plaster, fillers, sealants and repair compounds.
About Our Plaster, Fillers & Sealants
Our plaster, fillers and sealants range includes finishing plaster, ready-mixed fillers, repair compounds, decorators’ caulk, sanitary silicone, grab adhesives and the application tools needed to achieve a professional finish.
Choosing the right plaster, filler and sealant for each stage helps produce a stronger, longer-lasting repair that’s ready for decorating.
Below you’ll find answers to common questions to help you select and use plaster, fillers and sealants with confidence.
Why It Matters
Using trade-quality products helps reduce snagging, improve finish quality and minimise costly return visits.
Surface Preparation & Repairs
What plaster, fillers and sealants do you stock?
Orion Trade Supplies stocks a comprehensive range of plaster, fillers, sealants, adhesives and repair compounds for contractors working on maintenance, refurbishment and decorating projects.
Our range includes finishing plaster, ready-mixed fillers, repair compounds, decorators’ caulk, sanitary silicone, grab adhesives and the application tools needed to achieve a professional finish.
Whether you’re repairing a single wall or completing a full property refurbishment, you’ll find the products you need at our Peckham and Rochester branches or online.
What's the difference between plaster, filler and sealant?
Although they’re often used together, each product has a different purpose.
Plaster is used to smooth or rebuild larger wall and ceiling areas, fillers repair holes, cracks and surface imperfections, while sealants and decorators’ caulk are designed to fill joints and gaps where movement or moisture protection is required. Using the correct product for each stage helps produce a stronger, longer-lasting repair that’s ready for decorating.
Which filler should I use for cracks and holes?
The right filler depends on the size and depth of the repair. Lightweight fillers are ideal for small holes and surface imperfections, while deeper repairs usually require a high-performance filler that won’t shrink or crack as it dries. Choosing the right product first time helps reduce snagging and creates a smoother finish before painting. Speak to the Orion team at either our Rochester or Peckham branches and they will be more than happy to advise on your specific project requirements.
How do I stop filler repairs from cracking or shrinking?
Good preparation is just as important as choosing the correct filler. Ensure loose material is removed, follow the manufacturer’s application guidance and avoid applying products beyond their recommended depth.
Trade-quality fillers are designed to minimise shrinkage and provide durable repairs that stand up to everyday use, particularly in busy residential properties.
Sealants, Caulks & Finishing
What sealant should I use in kitchens and bathrooms?
Bathrooms and kitchens require moisture-resistant sanitary sealants that can withstand regular exposure to water and humidity.
Can I paint over filler and sealant?
Most fillers can be sanded and painted once fully dry, while many decorators’ caulks are specifically designed to be painted over to create neat finishing lines around skirting boards, architraves and internal trims.
Always check the product guidance for curing times before decorating to achieve the best possible finish, or contact the Orion team for advice.
What's the difference between decorators' caulk and silicone sealant?
Decorators’ caulk is generally used on internal joints where the finished surface will be painted, such as around skirting boards, door frames and coving.
Silicone sealants remain flexible and provide superior water resistance, making them the preferred choice for kitchens, bathrooms and other areas exposed to moisture.
Repair, Redecoration & Site Efficiency
What products do I need for a typical repair and redecoration job?
Most repair and redecoration work requires plaster or repair compounds for larger damaged areas, filler for cracks and holes, decorators’ caulk or sealant for finishing joints, abrasives for surface preparation and decorating materials for the final finish.
Sourcing everything from one supplier saves time and helps maintain consistency across the project.
Why is using trade-quality fillers and sealants important?
Trade-quality products are formulated to provide better adhesion, easier sanding, improved flexibility and greater resistance to cracking or shrinkage.
For contractors, this means a higher-quality finish, fewer return visits and greater confidence that repairs will remain sound long after the project has been completed.
Do you supply products for social housing maintenance and void refurbishments?
Yes. Our range has been selected with maintenance contractors, housing associations, void property teams and refurbishment specialists in mind.
We understand the need for reliable products that perform consistently, helping contractors complete repairs efficiently and prepare properties for reoccupation with minimal delay.
Why Choose Orion Trade Supplies?
Can I buy plaster, fillers, sealants and decorating materials together?
Absolutely. Orion Trade Supplies provides plaster, fillers and sealants alongside paints, decorating tools, abrasives, PPE, adhesives, fixings and thousands of other trade products.
Buying everything from one trusted supplier simplifies procurement, reduces time spent sourcing materials and helps keep projects on programme.
Why do contractors buy plaster, fillers and sealants from Orion Trade Supplies?
Contractors choose Orion Trade Supplies because we understand the demands of maintenance, repairs and refurbishment projects. We stock trade-quality plaster, fillers, sealants and adhesives that deliver reliable results, helping reduce snagging, improve finish quality and minimise costly return visits.
Whether you’re carrying out responsive repairs, planned maintenance or full property refurbishments, our experienced team can help you select the right products for the job. With knowledgeable advice, trade accounts, Click & Collect, fast local delivery and convenient trade counters in Peckham and Rochester, Orion makes it easier to keep your projects moving and achieve a professional finish first time.
We are also happy to provide Trade Accounts (subject to status) to allow our customers to more easily manage project budgeting.
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