How to reduce plastic in your home build or renovation project

Why reduce plastic in your home build project?

Plastic can crop up in all sorts of places when building or renovating a home, whether in insulation and pipes or packaging and finishes. Cutting down where you can helps reduce waste and makes your project more sustainable.

Most conventional plastics are made from fossil fuels and can take hundreds of years to break down, contributing to pollution and harming wildlife. Recycling helps, but it doesn’t solve the whole problem and some plastic waste is often incinerated rather than recycled.

Where is plastic used in a typical home build?

From the foundations to the finishing touches, plastic can be found throughout a building project.

You can find it in:

• Windows and doors – uPVC frames.

• Insulation – foam boards and other plastic-based insulation products.

• Plumbing and electrics – plastic pipes, cable insulation and electrical fittings.

• Damp protection – plastic membranes and moisture barriers.

• Finishes and fittings – flooring, paint, sealants, kitchen worktops and bathroom fittings.

• Packaging – wrapping, protective covering and other plastic materials used to transport and protect products on site.

Avoiding plastic altogether isn’t always practical. It can be durable, affordable and useful for insulation, plumbing and weatherproofing. Instead, think about where you can reduce its use, or choose alternatives without compromising on safety or your budget.

Choosing alternative materials

When planning your build or renovation, look for opportunities to replace plastic products with more sustainable alternatives.

The right choice will depend on the purpose of the material, your budget and what your home needs, so here are some examples for inspiration.

Plastic-free alternatives for windows and doors

• Timber frames: A natural, renewable option that can help keep your home warm, although they need some upkeep to stay in good condition.

• Aluminium frames: Strong, durable and recyclable. Look for frames with a thermal break to help keep the heat in.

• Timber-aluminium composite frames: These combine the warmth of timber inside with a protective aluminium finish on the outside.

Consider the cost and lifespan of your materials. Timber and aluminium can cost more upfront than PVCu (plastic), so weigh up the initial price and energy efficiency as well as how long they frames are likely to last.

Eco-friendly alternatives to plastic insulation

• Sheep’s wool: A natural material that helps regulate moisture and can be fitted between roof timbers, in walls and in floors.

• Hemp: A plant-based option that can help regulate moisture and is available in insulation batts and rolls.

• Wood fibre: Made from wood fibres, it’s often used in walls, roofs and floors.

• Cellulose: Usually made from recycled paper, it’s commonly blown into roof spaces and wall cavities.

• Cork: A natural, renewable material that insulates well and helps reduce sound transmission.

Plumbing, pipes and wiring: lower-plastic options

• Copper pipework: A durable, recyclable option that’s often used for hot and cold water systems.

• Stainless steel pipes: Strong and corrosion-resistant, although they can be more expensive.

• Clay and cast iron drainage: Traditional alternatives to plastic drainpipes with cast iron, also offering good sound insulation.

• Low smoke zero halogen (LSZH) cabling: Designed to release less smoke and no halogen gas when exposed to fire. It still has a plastic-based covering, so it’s not completely plastic-free, but it can be a useful option when fire safety is a priority.

Plastic-free flooring, finishes and fittings

• Natural carpets: Jute, coir, sisal and wool can all be good options. Look for natural-fibre underlay, too, if you want to reduce plastic further.

• Wood, cork and natural linoleum flooring: These offer alternatives to plastic-based flooring. Just check the product details, as some flooring and linoleum-style products contain synthetic materials.

• Plastic-free worktops: Timber and natural stone are options to explore. Recycled materials may also work, depending on their composition, so check what each product contains.

• Natural and low-VOC paints: Look for paints made with more natural ingredients or low levels of volatile organic compounds (VOCs). Low-VOC doesn’t necessarily mean plastic-free though, so check the label if that’s your priority.

You don’t have to change everything at once, look at these as options. Even swapping a few plastic-heavy finishes for more natural materials can help reduce how much plastic you use in your project.

Reducing plastic in your garden and outdoor spaces

• Choose real grass over artificial turf: Natural lawns can provide food and shelter for insects and other wildlife. Artificial turf offers little value as a habitat and can shed plastic particles over time.

• Use natural landscaping materials: Timber, stone and reclaimed materials can be used for garden paths, patios, raised beds and borders. Reusing materials can also help reduce waste.

• Skip plastic membranes where possible: Weed-control membranes and plastic edging are common in gardens, but you may be able to use alternatives such as cardboard mulch, natural edging or carefully planned planting.

• Make space for wildlife: A mix of grass, native plants, shrubs and flowers can provide food and shelter for wildlife, helping your garden support local biodiversity.

Check out our latest guide on creating a more sustainable garden with eco-friendly tips and simple swaps you can make.

Managing plastic waste on your build

A little planning can go a long way when it comes to reducing plastic waste.

Set up separate bins for different materials so plastic can be easily sorted for recycling.

Before throwing anything away, see if leftover materials and packaging can be reused or passed on to someone else – remember that one person’s rubbish is another person’s treasure!

It’s also a good idea to include waste management in your plans from the start. Talk to your builders about how they’ll handle plastic waste and make sure that anything that can be reused or recycled is disposed of properly.

Finding eco-friendly suppliers and materials

Where you buy your building materials from can make a difference, too. Look for suppliers that use less plastic in their packaging and are open about how their products are made.

For example, if you’re thinking about using timber in your home build, you could look at FSC-certified options from responsibly managed forests.

You don’t have to buy everything brand new, either. Reclaimed and second-hand materials can help reduce waste and save you money too.

When comparing suppliers, ask about their packaging, how their products are made and whether they have any second-hand options to choose from. All of these small steps can help you make greener choices for your build.

The benefits of a low-plastic home

Cutting down on plastic in your home build can have benefits way beyond reducing waste:

• A healthier indoor environment from choosing materials with lower levels of chemicals and emissions.

• Some alternatives to plastic have a lower carbon footprint, depending on how they’re made, transported and installed.

• Potential appeal to eco-conscious buyers looking for a home with a lower environmental impact.

• Using fewer resources and reducing waste can help contribute to the UK’s wider net zero goals.

You can calculate your own carbon footprint to get a better idea of your household’s impact on the environment and see where you could make some changes.

Protecting the environment

Reducing plastic in your home build is one way to make your project more sustainable. By thinking carefully about the materials you use and where they come from, you can reduce waste and make choices that are better for the environment.

If you’re not sure where to start, don’t panic. You don’t need to get everything right from the get-go. Even a few thoughtful changings can make a real difference.

If you’re looking for more ways to make your home eco-friendly, take a look at our guide to improving your home’s EPC rating, or speak to a mortgage adviser about the possibility of a greener mortgage.