10 Plumbing Mistakes DIYers Always Make (And How to Avoid Them)

When a plumbing problem occurs, many home owners rush to fix it themselves. While DIY can sometimes save money, plumbing mistakes often end up costing more in the long run. At Craft and Fitting Plumbing, we have seen numerous cases where simple issues have become major problems due to DIY errors.

1. Using the Wrong Tools

Many DIYers attempt plumbing repairs with the wrong tools, leading to damaged pipes, stripped fittings, or broken taps. Professional company plumbers in Kenya use specialized tools to get the job done safely and efficiently.

2. Over-Tightening Connections

Tightening is good – but over-tightening can crack fittings and cause leaks later. This is a common mistake when installing showerheads, faucets, and joints.

3. Using the Wrong Type of Pipe

Not all pipes are the same. Mixing PVC, copper, or PPR without the right fittings causes leaks and water damage. At Craft and Fitting Plumbing, we ensure the right materials are used for long-lasting solutions.

4. Ignoring Local Plumbing Codes

In Kenya, plumbing systems must follow certain building standards. DIYers often ignore these codes, leading to unsafe systems and costly corrections.

5. Forgetting to Shut Off the Water Supply

One of the simplest mistakes: starting a repair without turning off the water supply. This results in floods, wasted water, and more damage than the original problem.

6. Incorrect Slope in Drainage Pipes

Drainage systems require the right slope for smooth flow. Too flat → water pools. Too steep → water runs but solids stay behind, causing blockages.

7. Using Too Much Drain Cleaner

Instead of fixing clogs, DIYers often pour excessive chemical cleaners down drains. These can damage pipes and create bigger plumbing mistakes.

8. Poor Sealing with Teflon Tape or Sealant

Improperly applied Teflon tape or sealant leads to small but persistent leaks. Professionals know the correct way to apply and secure fittings, thus reducing plumbing mistakes that prove costly.

9. Ignoring Small Leaks

A dripping tap or minor leak may seem harmless, but over time it wastes water, increases bills, and causes structural damage.

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10. Taking on Jobs That Need a Professional

The biggest mistake? Attempting complex plumbing jobs like water heater installation, bathroom renovation, or major drainage repairs without the right expertise. What starts as a DIY attempt often ends in costly emergency repairs.