Home Repair DIY Complete Guide 2026: Fix 50+ Problems in Plumbing/Wall/Furniture by Yourself, with Judgment Process

1. A must-have list for your home toolbox

2. Faucet leak repair

• Turn off water

  First close the water stop valve under the faucet, then open the faucet to release the residual water pressure

• Determine the type of leak

  Water dripping from the outlet is usually a gasket problem, while water leaking from the base may be due to an aging O-ring.

• Disassemble the faucet

  Remove the handle cover, remove the screws and handle, and use an adjustable wrench to turn the valve core

• Replace damaged parts

  Take the old parts to a hardware store to compare sizes and purchase replacements with the same specifications.

• Reassembly test

  Assemble in the reverse order of disassembly and turn on the water source to test whether there is still water leakage.

3. Wall repair and touch-up painting

• fill small holes

  Use soil-filling paste or toothpaste (temporary solution) to fill in the nail holes, then smooth them with fine sandpaper after drying

• Repair cracks

  Use a utility knife to slightly expand the crack into a V shape, fill it with elastic filler soil, smooth the surface and wait until it is completely dry.

• Treat areas with peeling paint

  Sand off the edges of the paint first with sandpaper to make it smooth, then apply primer and then topcoat.

• Extensive repairs

  Use drywall repair paste and mesh tape to cover the damaged area, applying in layers until smooth.

• Touch up paint tips

  Take a small piece of wall paint to the paint store to mix the color, and use a small roller or sponge to dab the color onto it to blend in with the surrounding area.

4. Unclogging drain pipes

• preventive cleaning

  Flush drain pipes with hot water every week, and clean them every month by pouring baking soda and white vinegar into them.

• Use a suction cup unclogger

  Completely cover the drain with the suction cup and quickly press up and down to create suction, suitable for minor blockages.

• Manual snake pipe unblocking

  Insert the unblocking snake into the drain pipe, rotate and push it to draw out hair and debris

• baking soda plus white vinegar

  Pour half a cup of baking soda and half a cup of white vinegar, cover the drain and wait for 30 minutes, then rinse with plenty of hot water

• Disassemble and clean the drain trap

  If the above method does not work, you can try to remove the U-shaped or P-shaped trap under the sink and clear the internal blockage.

5. Door and window adjustment and maintenance

• Door panel sagging

  It is usually caused by loose hinge screws, just tighten the screws. If the screw hole has enlarged, you can fill it with sawdust and glue and re-lock it.

• The door lock is not smooth

  Use pencil lead powder or special lubricant to coat the key and insert it into the keyhole to lubricate it. Do not use oil-based lubricants.

• Window slide jammed

  Clean dirt and debris from the track and apply Silicone lubricant to make it smooth

• Seal replacement

  Aged sealing strips will affect sound insulation and air tightness. You can tear off the old sealing strips and put on new sealing strips by yourself.

• Repair window screen holes

  Small holes can be temporarily sealed with nail polish. Large areas of damage require the entire gauze to be replaced.

6. Simple furniture repairs

• Tables and chairs shake

  Tighten all screws and connections first. If the mortise joint is loose, inject wood glue and clamp it until it dries.

• The drawer does not slide smoothly

  Apply beeswax or soap after cleaning the slide rails to restore smoothness. If it is seriously damaged, the slide rail needs to be replaced.

• Scratches on wooden surface

  Light scratches can be faded by wiping them with walnut kernels. Fill deep scratches with a crayon of the same color and polish with a soft cloth

• The skin is raised

  Use an iron to heat the cloth to soften the glue, then press it flat and secure it. If the glue has expired, you can inject all-purpose glue and clamp again

• Seat cushion dented

  Remove the chair cushion and add new foam or cotton filling to restore elasticity and comfort

7. When to Call a Professional

8. 2026 Find a master for market reference

• Key points for inquiry

  Ask at least 3 companies, request a written quotation (including materials + wages + warranty), and confirm whether a second return visit fee is required.

• Recommended platform comparison

  Sunday Home Repair (transparent reviews), 508 Repair Life (more expensive chain but complete warranty), 591 Home Services (lower prices but varying quality)

• Avoid being cheated indicators

  If any of the three symptoms of "Do it first and then calculate the money", "No warranty" or "No invoice" appear, it is recommended to change the master.

• Warranty concept

  Regular masters should provide a 7-30 day project warranty, and the material warranty depends on the brand. Confirm normal operation before signing for receipt

9. DIY vs. hiring a master: the decision-making process

• Signals suitable for DIY

  The problem is small, ready-made tools are available, online teaching is sufficient, repairs will not cause disaster, and you have time

• It is recommended to ask the master for a signal

  Involves water, electricity and gas, requires climbing, affects structural safety, complex pipelines in old buildings, and renters (the landlord may require professional handling)

• DIY learning resources

  YouTube channel: A Yuanshi home repair, light home/Internet tools: Bosch DIY, Teliwu online teaching

• insurance perspective

  DIY repairs are your own responsibility; repairs by masters are covered by engineering insurance and labor union compensation mechanisms. For important pipelines, I tend to find a master to save trouble.