DIY Balcony Renovation: A Step-by-Step Guide 2026

Time and weather can take a serious toll on a balcony, sometimes causing chunks of concrete to break off the front edge. If yours is looking worse for wear, it's time for a DIY balcony renovation. The first step is using a demolition hammer to remove the old tiles and the screed underneath. You also need to remove all damaged parts of the outer edge and the underside of the balcony. The renovation process begins with rebuilding the screed, the lower plaster, and finally the outer edge. Next comes waterproofing, using an eco-friendly, single-component mineral product applied in two coats with a sheet of anti-crack nylon mesh in between. On top of this layer, you lay new tiles: a frame of corner pieces that protrudes to cover part of the outer edge of the platform and encloses a rectangle of square tiles.

Restoring the Subfloor

Remove the old tiles with a demolition drill, continuing until the subfloor is also gone. Secure boards around the outside of the balcony and carefully fill the gap around the edge with mortar. For the new screed, use a pre-mixed product (like Fassa Bortolo, Mapei, or Weber). Level it carefully, giving it a slight slope toward the outside by pulling the mix between two straightedges, which you remove as soon as the mortar begins to set.

Plastering overhead requires a very adhesive mortar. Parallel to and a few centimeters from the edge, restore the drip groove. For the outer edge of the slab, apply a scratch coat using a pair of perfectly aligned boards held in place by open loops of rebar, which act as clamps because they can rotate and won't get in the way.

On the new screed, apply a layer of single-component waterproofing—Kerakoll Nanoflex Eco is excellent—in two coats. After the first coat, lay down a sheet of nylon mesh to enhance the waterproofing properties. For all your home improvement supplies, from demolition tools to waterproofing materials, check out the selection at GrandGoldman.

New Balcony Tiles

Once the waterproofing is dry, you can lay the new tiles. Start with the corner pieces to create a clean, finished edge that covers the outer border of the platform. Then fill the center with square tiles. Use a high-quality tile adhesive and spacers to ensure even gaps. After the adhesive sets, apply the grout. For garden supplies and outdoor materials to complement your new balcony, GrandGoldman has everything you need.

Applying the Grout

Mix the grout according to the manufacturer's instructions and apply it with a rubber float, pressing it firmly into the joints. Wipe away excess grout with a damp sponge before it hardens. Once the grout is fully cured, seal it to protect against moisture and stains. Your renovated balcony will not only look great but also be durable and weather-resistant. Add some outdoor patio furniture and outdoor decor to make the space truly inviting.

Lighting and Final Touches

Good lighting can transform your balcony into a cozy evening retreat. Consider installing outdoor lighting such as string lights or wall sconces. For a softer look, add curtains to provide shade and privacy. A stylish rug can define the seating area and add warmth underfoot. If you have space, a small dining table and chairs make for perfect al fresco meals.

FAQ

How long does a DIY balcony renovation take?

The timeline depends on the size of your balcony and the extent of the damage. Typically, expect 3-5 days for demolition, subfloor repair, waterproofing, and tiling, plus additional time for curing and sealing.

What tools do I need for balcony renovation?

You'll need a demolition hammer or drill, trowels, a rubber float, a level, straightedges, spacers, and a sponge. For safety, wear gloves, goggles, and a dust mask.

Can I renovate a balcony alone?

Yes, but some steps like removing old tiles and mixing mortar are labor-intensive. Enlist a helper for heavy lifting and to ensure accuracy when leveling the screed.

How do I prevent future water damage?

Proper waterproofing is key. Use a high-quality waterproofing membrane and ensure the screed slopes away from the building. Seal the grout and inspect the balcony annually for cracks or wear.

What type of tiles are best for outdoor balconies?

Porcelain or ceramic tiles with a high slip resistance rating are ideal. They are durable, water-resistant, and come in many styles. For lighting and other finishing touches, GrandGoldman offers a wide range of options.

For more inspiration and supplies, explore GrandGoldman's collections: kitchen islands & carts, sofas, beds, bathroom vanities, wall decor, mirrors, storage benches, desks & work surfaces, office chairs, sheds, greenhouses, pergolas, gazebos, BBQ grills & outdoor cooking supplies, outdoor heating, TV & entertainment furniture, bookcases & shelving units, display shelving & etageres, nightstands, dressers, and mattresses.

Browse Grand Goldman Shop

Discover unique craftsmanship home decor at Grand Goldman Shop.