Bulk Gravel Delivery to Kaaawa, HI
Hawaii Rock Supply handles gravel and aggregate delivery in Kaaawa, HI for contractors and homeowners alike. Some orders are a single load of base course for a driveway or a slab pad.
Others are a few yards of chips or cinder for a garden path. Windward ground stays damp much of the year, so the material under a drive or walkway has to suit the site.
Ground and Conditions in Kaaawa
Across the Windward Oahu and the North Shore side, the trades push against the Koolau wall and release rain almost daily. The clay on those slopes drains slowly, and low ground near the water table rarely dries out fully.
A thin layer of base course over that clay fails fast. Water sits in the soft zone, the surface rutting and pumping instead of holding a firm crust.
The fix is a base course layer deep enough to sit above ground that stays wet. Crushed basalt base course is the compacting layer county public works specifications call for under flatwork, and it is what island yards mean by base course.
Erosion follows the same pattern. Steep stream and gulch scour off the Koolau, hillside slips on saturated clay, and shoreline erosion along the windward coast all move ground.
Work runs year round here, though the ground is softest from October through April, when heavy runoff comes off the pali after a stalled front.
Materials for Kaaawa Projects
Fines and screenings do the fine work on paths and walkways. Stone screenings are basalt fines used to bed pavers, flagstone and slabs, and to fill the joints between them.
They pack tight under flatwork and give a path a firm, level surface. For a walkway top dressing, 3/8 inch chips are the island size to ask for.
Chips are clean crushed basalt at that size, and they work as a topping over a compacted layer, as pipe bedding, and on paths and fine drainage.
Cinder is the other path material worth knowing. It is an island product with no mainland equivalent, and it suits paths, walkways, garden beds and planter mixes.
Black cinder is the denser of the two and takes foot traffic, while red cinder is lighter and used for color.
Under any of those surfaces, base course is the structural layer. It is also called 3/4 inch minus base course, untreated base or crushed basalt base course, and it goes under driveways, parking pads, and slab and shed bases.
Where a binding, compacting material is wanted for a drive or pad, crusher run does that job. Island quarries usually sell it by nominal size, as 3/4 inch minus or 1-1/2 inch minus, rather than by the crusher run name.
For drainage, blue rock is the island name for clean crushed basalt at 3/4 inch. It goes into drainage beds, drive surfacing, trench bottoms and construction entrances.
Drain rock, also called filter rock or lava rock, fills drywells, rock pits, French drains, foundation drains and downspout runs. Drywells carry a lot of the load here because many subdivisions have no street storm drain to tie into.
Delivery to Kaaawa and the Surrounding Area
Quantities are ordered by the ton or by the yard, and each product page has a calculator to size the load. Pick a delivery date at checkout and a dump truck tips the material on site in one pile.
Kaaawa sits in Honolulu County, and delivery reaches the surrounding area as well as Pearl City, Kailua, Waipahu, Kaneohe and Kapolei.
Order Gravel and Aggregate for Your Kaaawa Project
Size your load on the product page calculator, then order by the ton or the yard and choose a delivery date at checkout. Hawaii Rock Supply brings bulk gravel, stone, sand and soil to Kaaawa and the surrounding part of Honolulu County.