Quick Answer
Screened loam is topsoil run through a ½-inch mesh screen to remove rocks, sticks, and debris — the result is a uniform fine-to-medium soil suitable for lawn repair, raised beds, and grading. For a typical Belmont lawn-repair top-dress (¼ inch over 1,000 sq ft), order 1 cubic yard of Topsoil Loam ½" Screened. It beats unscreened topsoil because rocks won't dull mower blades, and bagged big-box topsoil costs roughly double per yard for a typically lower-quality product.
Why Screened Loam Matters in Belmont
Belmont lawns sit on a mix of glacial till (rocky) and old farm topsoil (organic-rich). Both extremes create problems for lawn repair: rocky native soil tears mower blades, and old farm topsoil is often inconsistent in pH and nutrients. Importing screened loam from a known-quality bulk supplier gives Belmont homeowners a uniform starting material for any lawn-repair project — vole damage, plow tear-outs, salt-damage stripes, or full reseed zones.
This Q&A walks through the eight questions Belmont homeowners ask in February when they're planning April lawn repair.
Q: What is screened loam?
A: Topsoil run through a ½-inch mesh screen.
Bulk topsoil straight from a stripping operation contains rocks, sticks, root balls, clumps, and the occasional brick or rusted nail. Screening removes everything larger than ½ inch, leaving a uniform fine-to-medium soil with consistent grain and organic content.
The screen size matters:
- ½-inch screen — standard for residential loam; the Ottr Landscape Supply spec
- ¼-inch screen — finer; used for golf-course top-dressing, premium pricing
- 1-inch screen — coarser; useful for grading and rough fill, not for lawn repair
For Belmont residential use, ½-inch screened loam is the right grade.
Q: Does my Belmont lawn actually need screened loam?
A: Yes, for any patch repair or top-dressing.
Three reasons:
- Mower-blade protection — unscreened topsoil contains rocks that nick and dull blades within a season
- Even seeding — uniform grain spreads cleanly with a broadcast spreader and contacts seed evenly
- Drainage consistency — screened loam has predictable percolation; raw topsoil can have clay pockets that hold water
For a 100 sq ft vole-damage repair patch in a Belmont front yard, screened loam is the right material. See 5 Vole-Damage Repair Tips for Scituate Lawns for the parallel scope of work.
Q: How much screened loam do I need to top-dress a Belmont lawn?
A: 1 cubic yard per 1,000 square feet at ¼-inch top-dress depth.
The math:
Square feet × depth in feet ÷ 27 = cubic yards
For a 1,000 sq ft lawn at ¼-inch (0.0208 ft): - 1,000 × 0.0208 = 20.8 cu ft ÷ 27 = 0.77 cu yd — round up to 1 cu yd ordered
For a 5,000 sq ft Belmont lawn (typical front + back), order 5 cubic yards at the same depth. UMass Extension Turf Program treats ¼-inch top-dress as the standard — deeper applications can smother grass.
For repair patches (4-inch fill in dead spots), the math changes: - 100 sq ft × 0.333 ft = 33 cu ft = 1.2 cu yards for filling 4 inches deep across a 100 sq ft area
Q: What's the difference between screened loam and Super Loam?
A: Two products for two jobs.
- Topsoil Loam ½" Screened — general-purpose. Right for lawn repair, top-dressing, foundation beds, basic raised beds.
- Super Loam — higher organic content blend. Right for premium vegetable raised beds and intensive flower gardens where you want maximum nutrient density.
For lawn repair in Belmont, Topsoil Loam ½" Screened is the right choice — Super Loam's extra organic matter is unnecessary expense for grass.
Browse the Lawn Leveling & Repair collection for current per-yard rates and the Belmont landscape supply page for delivery scheduling.
Q: Can I just use bagged topsoil from a box store?
A: For small patches under 30 sq ft, yes. For anything larger, bulk loam wins on price and quality.
Bagged big-box topsoil:
- Runs $4–6 per cubic foot bagged ($100+ per cubic yard equivalent)
- Quality varies wildly — many bags are screened compost mixes labeled "topsoil"
- Convenient for the back of a hatchback
Bulk screened loam:
- Runs $40–55 per cubic yard delivered
- Consistent quality from a known supplier
- Requires bulk delivery (1-yard minimum)
The break-even is roughly 30 sq ft of repair work. Below that, bagged is fine for convenience. Above that, bulk delivery saves real money.
Q: How long does screened loam keep before I need to use it?
A: Indefinitely if kept dry; 6 months if uncovered.
Loam piled on a tarp under a second tarp keeps for years. Loam exposed to rain and snow develops weed seeds within 6 months and compacts into a wet brick. For Belmont yards getting March delivery for April work, tarp the pile immediately and the material will be perfect when you spread it.
Q: What about pH? Do I need to test the loam?
A: Bulk loam from Ottr arrives at neutral pH (~6.5) — fine for cool-season grasses.
Belmont's cool-season lawn mix (Kentucky bluegrass, fine fescue, perennial ryegrass) thrives at pH 6.0–7.0. Bulk screened loam from quality MA sources sits in that range without amendment.
For long-term lawn pH management, mail a soil sample to the UMass Soil and Plant Nutrient Testing Lab every 2–3 years and amend with lime or sulfur as recommended.
Q: When should I order in Belmont for an April top-dress?
A: By March 25 for early-April delivery.
The supplier's April schedule fills up fast as mulch season opens. A late-March order locks late-winter pricing (no spring bump) and gets the loam staged before peak demand. For neighbor context on the pre-order timing for mulch the same week, see How to Pre-Order Spring Mulch for a Worcester County Property. For the parallel review on hardwood mulch performance you'll want before specifying mulch with the loam delivery, see Ottr Hardwood Mulch After 12 Months in a Hanover Bed. The 2026 follow-up on mulch pre-booking in Plymouth County sits at Mulch Pre-Book in Plymouth County.
For region-specific lawn-repair guidance, the UMass Extension Turf Program is the most authoritative source — Belmont's lawn type and climate align with their southeastern-MA recommendations.
The Short Version
For a Belmont lawn: screened ½" Topsoil Loam, 1 yard per 1,000 sq ft top-dress, order by March 25, tarp the pile, spread in early April. Beats bagged topsoil on price and quality once you're past 30 sq ft of work.
