1) Kitchen Countertops
Suitable: Fine-grained Class A granite such as Sesame White, Sesame Gray, and Black Gold Sand
Advantages: Scratch-resistant to knives, resistant to soy sauce\/vinegar\/acid-base penetration, heat-resistant to hot pots
Pitfalls to Avoid: Coarse-grained materials with rough textures and large pores easily absorb oil stains; not recommended for stovetops
2) Windowsills, Thresholds, and Stair Treads
Wear-resistant and impact-resistant, waterproof and moisture-proof, does not whiten or wear out from long-term foot traffic
3) Floors and Feature Walls
Avoid large areas of dark granite in small apartments (oppressive); light gray and light white are versatile<\/li>\n\n\n\n
Sidewalks, plaza paving, residential landscaping, exterior wall dry-hanging, tombstones, pools
Advantages: Frost-resistant, acid rain-resistant, non-fading under sun exposure, resistant to vehicle crushing
Common Finishes: Flamed or leathered surfaces for slip resistance; polished surfaces are used only indoors<\/li>\n\n\n\n
Specialized Class 00 and Class 000 fine-grained granite
Core Requirements: Low expansion, vibration damping, non-magnetic, stress stability, high flatness<\/li>\n\n\n\n
Rockeries, stone tables and benches, fountain pools; waterproof and weather-resistant, does not powderize even when submerged year-round
II. Complete Selection Standards for Granite (Separated by Home vs. Industrial)
(I) 5 Core Points for Home and Civil Selection<\/li>\n\n\n\n
National Stone Classification Standards:
Class A: Universal for all indoor\/outdoor walls, countertops, and floors; the first choice for homes
Class B: For exterior walls only; strictly prohibited for indoor stovetops and bedroom floors
Class C: Only for outdoor roads and embankments; prohibited indoors
When purchasing, always check the stone’s radioactivity test report provided by the merchant; prioritize requesting reports for red and dark stones.<\/li>\n\n\n\n
Fine-grained granite (small, uniform crystals): Dense, extremely low water absorption, oil-resistant; suitable for stovetops, countertops, and high-precision platforms; higher premium
Medium-to-coarse grain: Slightly larger pores; suitable for outdoor floors and exterior walls; not recommended for kitchen countertops<\/li>\n\n\n\n
1) Surface: No obvious through-cracks, black scars, rust spots, or yellow lines (iron oxide causes yellowing)
2) Crystals: Uniform crystal distribution, no large mica clusters (excessive mica easily weathers and sheds black spots)
3) Water Drop Test: Drop clean water on the back of the stone; if the droplet does not spread or penetrate quickly = dense high-quality material; rapid spreading indicates large pores and easy staining
4) Thickness:
Countertop standard thickness: 20mm; Stair treads: \u226530mm; Outdoor paving: \u226550mm<\/li>\n\n\n\n
Recommended for low-maintenance homes: Sesame White, Sesame Gray, Light Gray Linen; stains are inconspicuous and radioactivity is generally low
Use with caution: Bright red, pure Black Gold Sand, dark green\/heavy colors; some varieties have higher radioactivity, and oil\/water stains are highly visible<\/li>\n\n\n\n
Countertops must have: Water-retaining edges, bottom reinforcement, and rounded corners (to prevent chipping)
Outdoor stones should have flamed\/leathered slip-resistant surfaces; polished surfaces are slippery when wet and prohibited for balconies and stairs
(II) Special Selection Standards for Industrial Granite Platforms
1) Grade: Class 00 \/ Class 000, micron-level flatness tolerance
2) Material: High-quality fine-grained black granite such as Jinan Green; extremely low thermal expansion coefficient
3) Requirements: No internal stress, no air pores, non-magnetic, strong vibration damping
4) Factory-provided certificates for flatness and expansion coefficient testing<\/li>\n<\/ol>\n\n\n\n
III. Key Points for Granite Installation (Determining Service Life)
Six-sided protection (front, back four sides) must be applied before countertop installation; only protecting the front will inevitably lead to oil seepage later.
Cement application: Use low-alkali cement for outdoor and floor applications; alkali will cause efflorescence (whitening) on the stone, which can be mitigated by using a stone protector.
Expansion joints: Leave a 3-5mm gap every 1.5 meters outdoors to prevent cracking caused by thermal expansion and contraction.
Sink and stove joints: Use specialized anti-mold epoxy for stone; do not use ordinary silicone sealant (which turns black, molds, and leaks water).
Industrial platforms: Must be placed in a constant-temperature workshop for 2-3 days to release stress before calibrating precision.
IV. Daily Maintenance Guide for Granite by Scenario
(I) Kitchen Countertop Maintenance (Highest Frequency)
Daily Cleaning
Common stains: Warm water neutral dish soap, wipe with a soft cloth, and dry with clean water.
Stubborn oil stains: Use specialized stone degreaser; do not scrub hard with steel wool (it will scratch the polished surface).
Staining (soy sauce, coffee, iodine): Apply stone color remover paste and let it sit to absorb; do not soak in 84 disinfectant or toilet cleaner (strong acids\/alkalis) for long periods.
Acciones prohibidas
Do not place scalding hot pots directly on the surface (fine in the short term, but long-term high temperatures will accelerate the failure of the protective layer).
Do not let toilet cleaner, oxalic acid, or bleach sit for long periods; they will corrode the surface protective film.
Do not leave sliced lemons or vinegar for long periods; acidic substances will penetrate and leave marks.
Regular Maintenance
Re-apply oil-based stone protector every 1-2 years to seal micro-pores and prevent staining.
(II) Indoor Floor and Windowsill Maintenance
Daily mopping with clean water is sufficient; use strong alkaline floor cleaners sparingly.
Use pads under metal furniture legs to prevent rust from dripping and forming yellow rust stains.
Use stone rust remover paste for rust stains; do not rinse directly with hydrochloric acid.
(III) Outdoor Granite Maintenance (Flamed \/ Leather Finish)
Rinse moss and dust with a high-pressure water gun once a year, and clear weeds from joints.
In humid areas, apply waterproof protection every 2 years to prevent efflorescence and whitening from rainwater.
Do not use industrial snow-melting salt on snow accumulation; salt will corrode stone pores and accelerate weathering.
(IV) Industrial Measurement Platform Maintenance
Clean only with anhydrous ethanol and specialized lint-free cloths; do not allow water residue.
Avoid heavy impacts or hard object scratches on the surface; do not allow chemicals to drip.
Store in a constant-temperature environment; avoid direct sunlight to prevent dimensional deviations.
V. Common Problem Repair & Pitfall Summary<\/p>\n\n\n\n
- \n
- Oil Seepage and Yellowing
Cause: Poor protection, large pores in coarse-grained stone.
Solution: Absorb with degreaser paste, then re-apply overall protection.<\/li>\n\n\n\n - Surface Whitening and Efflorescence
Common outdoors due to cement alkali leaching; apply waterproof protection after cleaning, and replace joints with specialized grout.<\/li>\n\n\n\n - Chipping and Fine Cracks
Use same-color stone epoxy to repair minor cracks; replacement is recommended for large-scale fractures.
Buying Pitfall Checklist
Merchants verbally claim “radiation-free” without providing test reports \u2192 Do not buy.
Stove countertops using only 15mm thin slabs, without reinforcement or splashbacks \u2192 Do not choose.
Using low-priced coarse-grained granite for kitchen countertops, which easily seeps soy sauce and oil.
Using polished stone for stairs and balconies, which poses a safety hazard when wet and slippery.<\/li>\n<\/ol>\n\n\n\n![\"\"](\"https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/07\/\u5fae\u4fe1\u56fe\u7247_20260420155549_98_25.png\")
<\/figure>","protected":false},"excerpt":{"rendered":"Complete Guide to Granite Applications, Selection, and MaintenanceI. Main Application Scenarios of Granite (Matched by Performance) III. Key Points for Granite Installation (Determining Service Life)Six-sided protection (front, back four sides) must be applied before countertop installation; only protecting the front will inevitably lead to oil seepage later.Cement application: Use low-alkali cement for outdoor and floor…<\/p>","protected":false},"author":1,"featured_media":3101,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[35],"tags":[],"class_list":["post-3097","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"taxonomy_info":{"category":[{"value":35,"label":"NEWS"}]},"featured_image_src_large":["https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/07\/\u5fae\u4fe1\u56fe\u7247_20260420155549_98_25.png",703,895,false],"author_info":{"display_name":"jinxing6611@gmail.com","author_link":"https:\/\/jtlcnc.com\/es\/author\/jtlcnc\/"},"comment_info":0,"category_info":[{"term_id":35,"name":"NEWS","slug":"news","term_group":0,"term_taxonomy_id":35,"taxonomy":"category","description":"","parent":0,"count":310,"filter":"raw","cat_ID":35,"category_count":310,"category_description":"","cat_name":"NEWS","category_nicename":"news","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/posts\/3097","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/comments?post=3097"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/posts\/3097\/revisions"}],"predecessor-version":[{"id":3102,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/posts\/3097\/revisions\/3102"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/media\/3101"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/media?parent=3097"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/categories?post=3097"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/tags?post=3097"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}