Slope the patio away from the house, build on a properly compacted base, and plan where the water goes, whether that's a planted area, a drain or permeable pavers. Good drainage design matters more than the surface material in a rainy climate.
A patio, walkway or retaining wall can add real living space to your home. In Portland, where rain is a regular visitor, the most important part of any hardscape is how it handles water.
Which Way Should A Patio Slope?
Always away from the house. A gentle slope lets rain run off instead of pooling against your foundation or on the surface where it can freeze or grow moss.
Why Does The Base Matter So Much?
What's under a patio decides how long it lasts. A properly excavated and compacted gravel base helps prevent settling, sinking pavers and cracked slabs, especially in wet soils.
Where Does The Water Go?
Water has to end up somewhere. Common options include:
- Directing runoff to a planted area or rain garden.
- Installing a drain that carries water away.
- Using permeable pavers that let water soak through.
The right choice depends on your soil, your yard's grade and local rules on stormwater.
Which Patio Materials Work Well In A Wet Climate?
- Concrete pavers: durable and easy to repair one piece at a time.
- Natural stone: beautiful and long-lasting; choose textures with good grip when wet.
- Poured concrete: clean and affordable; a textured finish helps with traction.
Do Retaining Walls Need Special Care?
Yes. Retaining walls need drainage behind them so water pressure doesn't push them over time. Taller walls may need engineering and a permit, so check before you build.
How Do You Plan The Whole Yard?
- Decide how you want to use the space.
- Check grades and where water flows today.
- Plan drainage first, then the surfaces.
- Add planting and lighting to finish it off.
Ready For A Better Backyard?
Tell us how you want to use your outdoor space and we'll help you plan it. Book a free call and we'll talk through your project and next steps.
Frequently Asked Questions
Which way should my patio slope?
Away from the house, so rainwater runs off instead of pooling against the foundation.
Are permeable pavers a good idea in Portland?
They can be, because they let rain soak through. Whether they fit depends on your soil and yard.
Do retaining walls need a permit?
Taller walls and walls that support structures may need a permit and engineering. Check before you build.
