How to Care for & Maintain Your Building Blocks & Construction Toys
Published 2026-08-01 · Updated 2026-08-01
The Nest & Yard editorial team
Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-01.
Our pick: the MEGA BLOKS Fisher-Price Toddler Block Toys, Big Building Bag with 80 Pieces and Storage, Blue, Gift Ideas for Kids Age 1+ Years, DCH63 — the best Building Blocks & Construction Toys we tested, from £24.99.
Building blocks and construction toys are a fantastic way to encourage creativity and development in children, but keeping them in good condition requires a little everyday attention. Once you’ve invested in sets like those from MEGA BLOKS, LEGO or Desire Deluxe, ensuring they remain ready for countless hours of play means focusing on simple storage and regular cleaning – habits that benefit all kinds of blocks and bricks. Following these basic care steps will help maintain the quality of your child's building supplies, whether it’s a large collection of colourful plastic bricks or magnetic tiles.
See the full range in Building Blocks & Construction Toys.

#1 Pick
MEGA BLOKS Fisher-Price Toddler Block Toys, Big Building Bag with 80 Pieces and Storage, Blue, Gift Ideas for Kids Age 1+ Years, DCH63- 1+ years
£24.99
Pros
- 80 pieces in 10 shapes and 9 colours for varied builds
- Storage bag included for quick tidy-up
- Very high review volume and rating on Amazon UK
Cons
- Best suited to younger toddlers, may be outgrown quickly

#2 Pick
MEGA BLOKS Big Building Bag Building Set with 60 Big and Colorful Building Blocks, and 1 Storage Bag, Toy Gift Set for Ages 1 and Up, DCH55- 1+ years
£19.99
Pros
- Large, easy-grip blocks suit toddlers from age 1
- 60 pieces in vibrant colours plus a storage bag
- Well-known Mattel brand with strong review volume
Cons
- Chunky blocks build simpler structures than smaller brick sets

#3 Pick
LEGO 10696 Classic Medium Creative Brick Box, Easy Toy Storage, Colourful Bricks Building Set, Toys for Kids Aged 4 Plus with Wheels, Windows, Eyes and a Green Base Plate- 4+ years
£39.99
Pros
- 484 pieces in 35 colours plus wheels, windows and eyes
- Green baseplate and plastic storage box included
- Enormous review volume reflects long-running popularity
Cons
- Large piece count means longer tidy-up time

#4 Pick
Desire Deluxe Magnetic Building Blocks Tiles STEM Toy Set 57PC – Kids Learning Educational Construction Toys for Boys Girls Present Age 3 4 5 6 7 Year Old - Gift- 3+ years
£24.99
Pros
- 57-piece set with strong, clear magnetic tiles
- Extremely high review volume with a 4.8 average
- Encourages open-ended STEM and creative play
Cons
- Acrylic tiles can chip if dropped on hard floors
FAQ
How often should I be cleaning my building blocks, and what’s the best way to do it?+
Regular dusting with a soft cloth is usually sufficient for everyday dirt. For deeper cleaning, gently wash blocks in lukewarm water – avoid prolonged soaking as many materials can absorb moisture. Always dry thoroughly afterwards to prevent warping or damage.
Where’s the best place to store my building blocks to keep them safe and clean?+
Storing blocks in a cool, dry location away from direct sunlight is key to preventing fading and deterioration. Consider using airtight containers or bags to protect them from dust and dampness – ensure they are adequately ventilated.
What should I do if my building blocks get damp?+
Excess moisture can severely damage many construction toys, particularly those made of wood or foam. Immediately remove the blocks from contact with damp surfaces and allow them to air dry completely, away from heat sources. Check manufacturer’s instructions for any specific drying recommendations.
I've noticed some of my blocks are starting to crack – what could be causing this?+
Repeated impacts and stress can contribute to cracking in plastic or brittle materials. Avoid dropping blocks from excessive heights, and ensure they aren’t being used for activities that put undue strain on them. Check the material composition – softer plastics are more prone to damage.
Are there any specific cleaning products I should *avoid* using on my building blocks?+
Harsh chemicals, abrasive cleaners, and solvents can strip dyes and damage surfaces. Stick to gentle, pH-neutral soaps or detergents diluted in water for cleaning – always test a small area first.
How do I spot signs of wear and tear on my building blocks?+
Look out for fading colours, chipped edges, loose joints, or areas where the material is becoming brittle. Regularly inspecting your blocks can help you identify potential problems before they escalate into significant damage.
I’ve accidentally glued a block back together – should I try to fix it myself?+
Small adhesive repairs may be possible, but consider the structural integrity of the block. For larger or complex repairs, consulting with a specialist is often advisable to avoid further weakening the construction.
How can proper care affect the longevity of my building blocks?+
Consistent cleaning and careful storage significantly reduce wear and tear, extending the lifespan of your blocks. Gentle handling and avoiding rough play also contribute to their durability – these practices help maintain their structural integrity over time.
What’s the best way to clean larger construction sets with multiple pieces?+
For complex sets, use a soft brush or cloth to loosen dirt before gently wiping with a damp (not wet) cloth. Pay attention to intricate details and avoid applying excessive pressure to prevent damage to smaller components.
Is it worthwhile investing in protective covers for my building blocks?+
Protective covers can shield blocks from dust, scratches, and direct sunlight, particularly during storage. However, ensure the cover is breathable to prevent moisture build-up, and check manufacturer’s instructions regarding appropriate materials.
In depth
Maintaining your building blocks and construction toys requires a little attention but will significantly extend their lifespan and ensure they remain enjoyable for years to come. Regular upkeep after each play session is the simplest way to prevent significant build-up of dirt, dust, and sticky substances that can damage the materials. After use, take a few moments to brush off any loose debris – this could be sand from an outdoor play session, crumbs from a tea party, or simply accumulated dust. A soft brush, such as a paintbrush or even a clean toothbrush, works effectively for getting into crevices and around smaller pieces. Pay particular attention to areas where children tend to concentrate their building efforts; these are often the dirtiest spots.
For deeper cleaning, it's advisable to undertake this less frequently – perhaps every few months, depending on usage and exposure to the elements. The primary goal here is gentle removal of grime without causing harm to the plastic or wooden components. Damp cloths can be used for wiping down larger pieces, but always use a minimal amount of water. Excessive moisture is a significant risk with many building blocks, particularly those made from wood or certain types of plastic, as it can lead to warping, staining, and mould growth. If you do need to introduce a cleaning product, opt for an extremely mild, pH-neutral solution – diluted dish soap is often suitable, but test on an inconspicuous area first to ensure no discoloration occurs. Avoid abrasive cleaners or scouring pads that could scratch the surfaces.
Storage is crucial in preventing damage and maintaining the appearance of your building blocks. Ideally, store them in a cool, dry place away from direct sunlight. Sunlight can cause fading and weakening of plastic components over time. A cupboard or storage box made of wood or sturdy cardboard is generally a good choice, but ensure it’s adequately ventilated to prevent dampness. In the UK, condensation can be a considerable problem, particularly during colder months when heating systems are in use. Storing blocks directly on a cold windowsill will exacerbate this issue and could lead to warping and staining. Consider using desiccant packs within your storage container to absorb excess moisture. For outdoor-used blocks – those designed for play in gardens or parks – seasonal storage is essential. Clean them thoroughly before storing, allowing them to dry completely, and then protect them from the elements with a breathable covering if necessary.
A common mistake many parents make is excessive cleaning. Over-washing can strip away protective coatings on plastic pieces, making them more susceptible to damage. Similarly, using harsh chemicals, even in diluted forms, can cause discoloration or weaken the structural integrity of wooden blocks. Another frequent issue is forcing pieces into tight spaces when they don’t fit easily – this can lead to breakage, particularly with plastic components. It's better to encourage children to develop their spatial reasoning skills and accept that not every block will slot perfectly in place. Finally, leaving blocks out in direct sunlight for extended periods without protection will accelerate degradation of the materials.
Pay close attention to any signs that a building block is beyond repair or needs replacement rather than further cleaning. Cracks, particularly hairline cracks in plastic, can weaken the component and make it more likely to break during play. Significant warping or splintering in wooden blocks indicates structural damage. If pieces are excessively faded or discoloured, this often signifies prolonged exposure to sunlight and may indicate a loss of material integrity. Loose joints or connections are another key indicator; these require immediate attention to prevent further deterioration. Don't hesitate to replace items that are clearly damaged or beyond economical repair – the cost of replacing a single block is usually far less than the potential cost of repairing a severely compromised set.
Determining whether a repair is worthwhile depends on several factors, including the value of the building blocks, the extent of the damage, and your own DIY skills. For minor cracks in plastic, you might be able to reinforce them with a small amount of strong adhesive – again, test this first on an inconspicuous area. However, for significant structural damage or complex repairs, it’s generally best to consult a professional. A specialist toy repair service can often restore damaged blocks to their original condition, but these services are typically more suitable for valuable sets or those with sentimental value.
For straightforward repairs like reattaching loose joints, you may be able to tackle the job yourself using appropriate adhesives designed for the material in question – wood glue for wooden blocks and a plastic adhesive for plastic components. Always follow the manufacturer's instructions carefully when applying adhesive. If you are unsure about any repair, it’s always prudent to seek professional advice or replacement parts rather than risking further damage. Remember that attempting complex repairs without the necessary skills and tools can easily make the problem worse.
In situations where the damage is extensive, or if you’re simply not comfortable undertaking a repair yourself, contacting a specialist toy restoration company may be the best course of action. These companies have the expertise and specialised equipment to restore damaged building blocks to their former glory. However, these services can be costly, so weigh the potential cost against the value of the set before proceeding. Ultimately, preventative maintenance – regular cleaning and careful storage – is far more effective than reactive repairs in preserving your investment.
It’s vitally important to always consult the manufacturer's specific care instructions for the particular building blocks you own. These instructions will outline any material-specific recommendations or warnings regarding cleaning, storage, and potential damage. The manufacturer has the most detailed knowledge of their product's composition and intended use and will provide the most accurate guidance for its long-term maintenance.